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Finding the Fourth Proportional to 658.93, 987.71 and 453.44

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Solution

The fourth proportional to 658.93, 987.71 and 453.44 is: 679.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    658.93 : 987.71 = 453.44 : x
  2. Step 2: Convert to fraction form
    658.93/987.71 = 453.44/x
  3. Step 3: Cross multiply
    658.93x = 987.71 × 453.44
  4. Step 4: Simplify right side
    658.93x = 447,867.22
  5. Step 5: Solve for x
    x = 447,867.22/658.93
  6. Step 6: Final answer
    x = 679.69

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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.