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Finding the Fourth Proportional to 762.38, 1,052.16 and 467.60

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Solution

The fourth proportional to 762.38, 1,052.16 and 467.60 is: 645.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    762.38 : 1,052.16 = 467.60 : x
  2. Step 2: Convert to fraction form
    762.38/1,052.16 = 467.60/x
  3. Step 3: Cross multiply
    762.38x = 1,052.16 × 467.60
  4. Step 4: Simplify right side
    762.38x = 491,990.02
  5. Step 5: Solve for x
    x = 491,990.02/762.38
  6. Step 6: Final answer
    x = 645.33

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.