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Finding the Fourth Proportional to 658.46, 985.80 and 369.38

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Solution

The fourth proportional to 658.46, 985.80 and 369.38 is: 553.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    658.46 : 985.80 = 369.38 : x
  2. Step 2: Convert to fraction form
    658.46/985.80 = 369.38/x
  3. Step 3: Cross multiply
    658.46x = 985.80 × 369.38
  4. Step 4: Simplify right side
    658.46x = 364,134.80
  5. Step 5: Solve for x
    x = 364,134.80/658.46
  6. Step 6: Final answer
    x = 553.01

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.