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Finding the Fourth Proportional to 658.75, 906.18 and 632.11

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Solution

The fourth proportional to 658.75, 906.18 and 632.11 is: 869.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    658.75 : 906.18 = 632.11 : x
  2. Step 2: Convert to fraction form
    658.75/906.18 = 632.11/x
  3. Step 3: Cross multiply
    658.75x = 906.18 × 632.11
  4. Step 4: Simplify right side
    658.75x = 572,805.44
  5. Step 5: Solve for x
    x = 572,805.44/658.75
  6. Step 6: Final answer
    x = 869.53

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1.5x scale

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.