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Finding the Fourth Proportional to 158.38, 236.96 and 146.64

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Solution

The fourth proportional to 158.38, 236.96 and 146.64 is: 219.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    158.38 : 236.96 = 146.64 : x
  2. Step 2: Convert to fraction form
    158.38/236.96 = 146.64/x
  3. Step 3: Cross multiply
    158.38x = 236.96 × 146.64
  4. Step 4: Simplify right side
    158.38x = 34,747.81
  5. Step 5: Solve for x
    x = 34,747.81/158.38
  6. Step 6: Final answer
    x = 219.40

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.