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Finding the Fourth Proportional to 158.28, 239.10 and 156.93

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Solution

The fourth proportional to 158.28, 239.10 and 156.93 is: 237.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    158.28 : 239.10 = 156.93 : x
  2. Step 2: Convert to fraction form
    158.28/239.10 = 156.93/x
  3. Step 3: Cross multiply
    158.28x = 239.10 × 156.93
  4. Step 4: Simplify right side
    158.28x = 37,521.96
  5. Step 5: Solve for x
    x = 37,521.96/158.28
  6. Step 6: Final answer
    x = 237.06

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.