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Finding the Fourth Proportional to 114.70, 171.06 and 97.69

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Solution

The fourth proportional to 114.70, 171.06 and 97.69 is: 145.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    114.70 : 171.06 = 97.69 : x
  2. Step 2: Convert to fraction form
    114.70/171.06 = 97.69/x
  3. Step 3: Cross multiply
    114.70x = 171.06 × 97.69
  4. Step 4: Simplify right side
    114.70x = 16,710.36
  5. Step 5: Solve for x
    x = 16,710.36/114.70
  6. Step 6: Final answer
    x = 145.69

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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.