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Finding the Fourth Proportional to 179.52, 247.58 and 130.72

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Solution

The fourth proportional to 179.52, 247.58 and 130.72 is: 180.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    179.52 : 247.58 = 130.72 : x
  2. Step 2: Convert to fraction form
    179.52/247.58 = 130.72/x
  3. Step 3: Cross multiply
    179.52x = 247.58 × 130.72
  4. Step 4: Simplify right side
    179.52x = 32,363.66
  5. Step 5: Solve for x
    x = 32,363.66/179.52
  6. Step 6: Final answer
    x = 180.28

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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.