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Finding the Fourth Proportional to 658.34, 987.47 and 171.36

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Solution

The fourth proportional to 658.34, 987.47 and 171.36 is: 257.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    658.34 : 987.47 = 171.36 : x
  2. Step 2: Convert to fraction form
    658.34/987.47 = 171.36/x
  3. Step 3: Cross multiply
    658.34x = 987.47 × 171.36
  4. Step 4: Simplify right side
    658.34x = 169,212.00
  5. Step 5: Solve for x
    x = 169,212.00/658.34
  6. Step 6: Final answer
    x = 257.03

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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.