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Finding the Fourth Proportional to 658.95, 909.41 and 379.23

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Solution

The fourth proportional to 658.95, 909.41 and 379.23 is: 523.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    658.95 : 909.41 = 379.23 : x
  2. Step 2: Convert to fraction form
    658.95/909.41 = 379.23/x
  3. Step 3: Cross multiply
    658.95x = 909.41 × 379.23
  4. Step 4: Simplify right side
    658.95x = 344,875.55
  5. Step 5: Solve for x
    x = 344,875.55/658.95
  6. Step 6: Final answer
    x = 523.37

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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.