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Finding the Fourth Proportional to 158.98, 238.15 and 104.71

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Solution

The fourth proportional to 158.98, 238.15 and 104.71 is: 156.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    158.98 : 238.15 = 104.71 : x
  2. Step 2: Convert to fraction form
    158.98/238.15 = 104.71/x
  3. Step 3: Cross multiply
    158.98x = 238.15 × 104.71
  4. Step 4: Simplify right side
    158.98x = 24,936.69
  5. Step 5: Solve for x
    x = 24,936.69/158.98
  6. Step 6: Final answer
    x = 156.85

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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.