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Finding the Fourth Proportional to 117.28, 175.14 and 113.36

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Solution

The fourth proportional to 117.28, 175.14 and 113.36 is: 169.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    117.28 : 175.14 = 113.36 : x
  2. Step 2: Convert to fraction form
    117.28/175.14 = 113.36/x
  3. Step 3: Cross multiply
    117.28x = 175.14 × 113.36
  4. Step 4: Simplify right side
    117.28x = 19,853.87
  5. Step 5: Solve for x
    x = 19,853.87/117.28
  6. Step 6: Final answer
    x = 169.29

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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.