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Finding the Fourth Proportional to 675.90, 932.13 and 476.87

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Solution

The fourth proportional to 675.90, 932.13 and 476.87 is: 657.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    675.90 : 932.13 = 476.87 : x
  2. Step 2: Convert to fraction form
    675.90/932.13 = 476.87/x
  3. Step 3: Cross multiply
    675.90x = 932.13 × 476.87
  4. Step 4: Simplify right side
    675.90x = 444,500.17
  5. Step 5: Solve for x
    x = 444,500.17/675.90
  6. Step 6: Final answer
    x = 657.64

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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.