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Finding the Fourth Proportional to 486.99, 730.73 and 243.52

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Solution

The fourth proportional to 486.99, 730.73 and 243.52 is: 365.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    486.99 : 730.73 = 243.52 : x
  2. Step 2: Convert to fraction form
    486.99/730.73 = 243.52/x
  3. Step 3: Cross multiply
    486.99x = 730.73 × 243.52
  4. Step 4: Simplify right side
    486.99x = 177,942.50
  5. Step 5: Solve for x
    x = 177,942.50/486.99
  6. Step 6: Final answer
    x = 365.39

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Find fourth proportional to 243.50, 365.36 and 121.76
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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.