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Finding the Fourth Proportional to 658.77, 988.22 and 225.93

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Solution

The fourth proportional to 658.77, 988.22 and 225.93 is: 338.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    658.77 : 988.22 = 225.93 : x
  2. Step 2: Convert to fraction form
    658.77/988.22 = 225.93/x
  3. Step 3: Cross multiply
    658.77x = 988.22 × 225.93
  4. Step 4: Simplify right side
    658.77x = 223,267.41
  5. Step 5: Solve for x
    x = 223,267.41/658.77
  6. Step 6: Final answer
    x = 338.92

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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.