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Finding the Fourth Proportional to 1,295.02, 1,942.56 and 321.13

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Solution

The fourth proportional to 1,295.02, 1,942.56 and 321.13 is: 481.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,295.02 : 1,942.56 = 321.13 : x
  2. Step 2: Convert to fraction form
    1,295.02/1,942.56 = 321.13/x
  3. Step 3: Cross multiply
    1,295.02x = 1,942.56 × 321.13
  4. Step 4: Simplify right side
    1,295.02x = 623,814.29
  5. Step 5: Solve for x
    x = 623,814.29/1,295.02
  6. Step 6: Final answer
    x = 481.70

Related Problems

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Half scale
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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.