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Finding the Fourth Proportional to 602.13, 898.80 and 557.03

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Solution

The fourth proportional to 602.13, 898.80 and 557.03 is: 831.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    602.13 : 898.80 = 557.03 : x
  2. Step 2: Convert to fraction form
    602.13/898.80 = 557.03/x
  3. Step 3: Cross multiply
    602.13x = 898.80 × 557.03
  4. Step 4: Simplify right side
    602.13x = 500,654.07
  5. Step 5: Solve for x
    x = 500,654.07/602.13
  6. Step 6: Final answer
    x = 831.47

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.