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Finding the Fourth Proportional to 158.56, 219.61 and 146.71

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Solution

The fourth proportional to 158.56, 219.61 and 146.71 is: 203.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    158.56 : 219.61 = 146.71 : x
  2. Step 2: Convert to fraction form
    158.56/219.61 = 146.71/x
  3. Step 3: Cross multiply
    158.56x = 219.61 × 146.71
  4. Step 4: Simplify right side
    158.56x = 32,219.44
  5. Step 5: Solve for x
    x = 32,219.44/158.56
  6. Step 6: Final answer
    x = 203.20

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.