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Finding the Fourth Proportional to 117.32, 174.85 and 117.14

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Solution

The fourth proportional to 117.32, 174.85 and 117.14 is: 174.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    117.32 : 174.85 = 117.14 : x
  2. Step 2: Convert to fraction form
    117.32/174.85 = 117.14/x
  3. Step 3: Cross multiply
    117.32x = 174.85 × 117.14
  4. Step 4: Simplify right side
    117.32x = 20,481.93
  5. Step 5: Solve for x
    x = 20,481.93/117.32
  6. Step 6: Final answer
    x = 174.58

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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.