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Finding the Fourth Proportional to 658.49, 988.18 and 453.24

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Solution

The fourth proportional to 658.49, 988.18 and 453.24 is: 680.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    658.49 : 988.18 = 453.24 : x
  2. Step 2: Convert to fraction form
    658.49/988.18 = 453.24/x
  3. Step 3: Cross multiply
    658.49x = 988.18 × 453.24
  4. Step 4: Simplify right side
    658.49x = 447,881.57
  5. Step 5: Solve for x
    x = 447,881.57/658.49
  6. Step 6: Final answer
    x = 680.17

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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.