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Finding the Fourth Proportional to 658.99, 909.39 and 360.23

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Solution

The fourth proportional to 658.99, 909.39 and 360.23 is: 497.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    658.99 : 909.39 = 360.23 : x
  2. Step 2: Convert to fraction form
    658.99/909.39 = 360.23/x
  3. Step 3: Cross multiply
    658.99x = 909.39 × 360.23
  4. Step 4: Simplify right side
    658.99x = 327,589.56
  5. Step 5: Solve for x
    x = 327,589.56/658.99
  6. Step 6: Final answer
    x = 497.11

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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.