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Finding the Fourth Proportional to 585.54, 807.60 and 487.14

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Solution

The fourth proportional to 585.54, 807.60 and 487.14 is: 671.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    585.54 : 807.60 = 487.14 : x
  2. Step 2: Convert to fraction form
    585.54/807.60 = 487.14/x
  3. Step 3: Cross multiply
    585.54x = 807.60 × 487.14
  4. Step 4: Simplify right side
    585.54x = 393,414.26
  5. Step 5: Solve for x
    x = 393,414.26/585.54
  6. Step 6: Final answer
    x = 671.88

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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.