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Finding the Fourth Proportional to 117.95, 176.10 and 97.39

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Solution

The fourth proportional to 117.95, 176.10 and 97.39 is: 145.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    117.95 : 176.10 = 97.39 : x
  2. Step 2: Convert to fraction form
    117.95/176.10 = 97.39/x
  3. Step 3: Cross multiply
    117.95x = 176.10 × 97.39
  4. Step 4: Simplify right side
    117.95x = 17,150.26
  5. Step 5: Solve for x
    x = 17,150.26/117.95
  6. Step 6: Final answer
    x = 145.40

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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.