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Finding the Fourth Proportional to 330.08, 494.97 and 156.71

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Solution

The fourth proportional to 330.08, 494.97 and 156.71 is: 234.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    330.08 : 494.97 = 156.71 : x
  2. Step 2: Convert to fraction form
    330.08/494.97 = 156.71/x
  3. Step 3: Cross multiply
    330.08x = 494.97 × 156.71
  4. Step 4: Simplify right side
    330.08x = 77,564.27
  5. Step 5: Solve for x
    x = 77,564.27/330.08
  6. Step 6: Final answer
    x = 234.99

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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.