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Finding the Fourth Proportional to 166.30, 229.61 and 148.76

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Solution

The fourth proportional to 166.30, 229.61 and 148.76 is: 205.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    166.30 : 229.61 = 148.76 : x
  2. Step 2: Convert to fraction form
    166.30/229.61 = 148.76/x
  3. Step 3: Cross multiply
    166.30x = 229.61 × 148.76
  4. Step 4: Simplify right side
    166.30x = 34,158.16
  5. Step 5: Solve for x
    x = 34,158.16/166.30
  6. Step 6: Final answer
    x = 205.40

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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.