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Finding the Fourth Proportional to 117.56, 176.46 and 53.48

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Solution

The fourth proportional to 117.56, 176.46 and 53.48 is: 80.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    117.56 : 176.46 = 53.48 : x
  2. Step 2: Convert to fraction form
    117.56/176.46 = 53.48/x
  3. Step 3: Cross multiply
    117.56x = 176.46 × 53.48
  4. Step 4: Simplify right side
    117.56x = 9,437.08
  5. Step 5: Solve for x
    x = 9,437.08/117.56
  6. Step 6: Final answer
    x = 80.27

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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.