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Finding the Fourth Proportional to 658.38, 909.63 and 651.90

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Solution

The fourth proportional to 658.38, 909.63 and 651.90 is: 900.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    658.38 : 909.63 = 651.90 : x
  2. Step 2: Convert to fraction form
    658.38/909.63 = 651.90/x
  3. Step 3: Cross multiply
    658.38x = 909.63 × 651.90
  4. Step 4: Simplify right side
    658.38x = 592,986.09
  5. Step 5: Solve for x
    x = 592,986.09/658.38
  6. Step 6: Final answer
    x = 900.68

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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.