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Finding the Fourth Proportional to 517.36, 775.44 and 243.18

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Solution

The fourth proportional to 517.36, 775.44 and 243.18 is: 364.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    517.36 : 775.44 = 243.18 : x
  2. Step 2: Convert to fraction form
    517.36/775.44 = 243.18/x
  3. Step 3: Cross multiply
    517.36x = 775.44 × 243.18
  4. Step 4: Simplify right side
    517.36x = 188,571.50
  5. Step 5: Solve for x
    x = 188,571.50/517.36
  6. Step 6: Final answer
    x = 364.49

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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.