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Finding the Fourth Proportional to 159.68, 238.08 and 157.92

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Solution

The fourth proportional to 159.68, 238.08 and 157.92 is: 235.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    159.68 : 238.08 = 157.92 : x
  2. Step 2: Convert to fraction form
    159.68/238.08 = 157.92/x
  3. Step 3: Cross multiply
    159.68x = 238.08 × 157.92
  4. Step 4: Simplify right side
    159.68x = 37,597.59
  5. Step 5: Solve for x
    x = 37,597.59/159.68
  6. Step 6: Final answer
    x = 235.46

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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.