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Finding the Fourth Proportional to 701.46, 1,052.39 and 579.15

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Solution

The fourth proportional to 701.46, 1,052.39 and 579.15 is: 868.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    701.46 : 1,052.39 = 579.15 : x
  2. Step 2: Convert to fraction form
    701.46/1,052.39 = 579.15/x
  3. Step 3: Cross multiply
    701.46x = 1,052.39 × 579.15
  4. Step 4: Simplify right side
    701.46x = 609,493.12
  5. Step 5: Solve for x
    x = 609,493.12/701.46
  6. Step 6: Final answer
    x = 868.89

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.