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Finding the Fourth Proportional to 149.46, 223.71 and 115.32

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Solution

The fourth proportional to 149.46, 223.71 and 115.32 is: 172.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    149.46 : 223.71 = 115.32 : x
  2. Step 2: Convert to fraction form
    149.46/223.71 = 115.32/x
  3. Step 3: Cross multiply
    149.46x = 223.71 × 115.32
  4. Step 4: Simplify right side
    149.46x = 25,798.24
  5. Step 5: Solve for x
    x = 25,798.24/149.46
  6. Step 6: Final answer
    x = 172.61

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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.