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Finding the Fourth Proportional to 174.91, 261.12 and 147.57

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Solution

The fourth proportional to 174.91, 261.12 and 147.57 is: 220.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    174.91 : 261.12 = 147.57 : x
  2. Step 2: Convert to fraction form
    174.91/261.12 = 147.57/x
  3. Step 3: Cross multiply
    174.91x = 261.12 × 147.57
  4. Step 4: Simplify right side
    174.91x = 38,533.48
  5. Step 5: Solve for x
    x = 38,533.48/174.91
  6. Step 6: Final answer
    x = 220.30

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.