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Finding the Fourth Proportional to 725.01, 1,001.66 and 476.24

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Solution

The fourth proportional to 725.01, 1,001.66 and 476.24 is: 657.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    725.01 : 1,001.66 = 476.24 : x
  2. Step 2: Convert to fraction form
    725.01/1,001.66 = 476.24/x
  3. Step 3: Cross multiply
    725.01x = 1,001.66 × 476.24
  4. Step 4: Simplify right side
    725.01x = 477,030.56
  5. Step 5: Solve for x
    x = 477,030.56/725.01
  6. Step 6: Final answer
    x = 657.96

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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.