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Finding the Fourth Proportional to 701.56, 1,052.88 and 458.20

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Solution

The fourth proportional to 701.56, 1,052.88 and 458.20 is: 687.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    701.56 : 1,052.88 = 458.20 : x
  2. Step 2: Convert to fraction form
    701.56/1,052.88 = 458.20/x
  3. Step 3: Cross multiply
    701.56x = 1,052.88 × 458.20
  4. Step 4: Simplify right side
    701.56x = 482,429.62
  5. Step 5: Solve for x
    x = 482,429.62/701.56
  6. Step 6: Final answer
    x = 687.65

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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.