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Finding the Fourth Proportional to 159.32, 236.88 and 157.70

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Solution

The fourth proportional to 159.32, 236.88 and 157.70 is: 234.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    159.32 : 236.88 = 157.70 : x
  2. Step 2: Convert to fraction form
    159.32/236.88 = 157.70/x
  3. Step 3: Cross multiply
    159.32x = 236.88 × 157.70
  4. Step 4: Simplify right side
    159.32x = 37,355.98
  5. Step 5: Solve for x
    x = 37,355.98/159.32
  6. Step 6: Final answer
    x = 234.47

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.