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Finding the Fourth Proportional to 158.79, 236.85 and 132.81

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Solution

The fourth proportional to 158.79, 236.85 and 132.81 is: 198.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    158.79 : 236.85 = 132.81 : x
  2. Step 2: Convert to fraction form
    158.79/236.85 = 132.81/x
  3. Step 3: Cross multiply
    158.79x = 236.85 × 132.81
  4. Step 4: Simplify right side
    158.79x = 31,457.03
  5. Step 5: Solve for x
    x = 31,457.03/158.79
  6. Step 6: Final answer
    x = 198.11

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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.