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Finding the Fourth Proportional to 658.99, 909.62 and 462.55

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Solution

The fourth proportional to 658.99, 909.62 and 462.55 is: 638.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    658.99 : 909.62 = 462.55 : x
  2. Step 2: Convert to fraction form
    658.99/909.62 = 462.55/x
  3. Step 3: Cross multiply
    658.99x = 909.62 × 462.55
  4. Step 4: Simplify right side
    658.99x = 420,741.88
  5. Step 5: Solve for x
    x = 420,741.88/658.99
  6. Step 6: Final answer
    x = 638.47

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Similar ratio
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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.