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Finding the Fourth Proportional to 158.68, 236.20 and 156.36

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Solution

The fourth proportional to 158.68, 236.20 and 156.36 is: 232.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    158.68 : 236.20 = 156.36 : x
  2. Step 2: Convert to fraction form
    158.68/236.20 = 156.36/x
  3. Step 3: Cross multiply
    158.68x = 236.20 × 156.36
  4. Step 4: Simplify right side
    158.68x = 36,932.23
  5. Step 5: Solve for x
    x = 36,932.23/158.68
  6. Step 6: Final answer
    x = 232.75

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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.