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Finding the Fourth Proportional to 572.58, 791.01 and 462.78

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Solution

The fourth proportional to 572.58, 791.01 and 462.78 is: 639.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    572.58 : 791.01 = 462.78 : x
  2. Step 2: Convert to fraction form
    572.58/791.01 = 462.78/x
  3. Step 3: Cross multiply
    572.58x = 791.01 × 462.78
  4. Step 4: Simplify right side
    572.58x = 366,063.61
  5. Step 5: Solve for x
    x = 366,063.61/572.58
  6. Step 6: Final answer
    x = 639.32

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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.