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Finding the Fourth Proportional to 658.23, 909.57 and 626.20

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Solution

The fourth proportional to 658.23, 909.57 and 626.20 is: 865.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    658.23 : 909.57 = 626.20 : x
  2. Step 2: Convert to fraction form
    658.23/909.57 = 626.20/x
  3. Step 3: Cross multiply
    658.23x = 909.57 × 626.20
  4. Step 4: Simplify right side
    658.23x = 569,572.24
  5. Step 5: Solve for x
    x = 569,572.24/658.23
  6. Step 6: Final answer
    x = 865.30

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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.