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Finding the Fourth Proportional to 158.96, 219.35 and 115.37

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Solution

The fourth proportional to 158.96, 219.35 and 115.37 is: 159.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    158.96 : 219.35 = 115.37 : x
  2. Step 2: Convert to fraction form
    158.96/219.35 = 115.37/x
  3. Step 3: Cross multiply
    158.96x = 219.35 × 115.37
  4. Step 4: Simplify right side
    158.96x = 25,304.74
  5. Step 5: Solve for x
    x = 25,304.74/158.96
  6. Step 6: Final answer
    x = 159.19

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.