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Finding the Fourth Proportional to 114.84, 171.98 and 74.14

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Solution

The fourth proportional to 114.84, 171.98 and 74.14 is: 111.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    114.84 : 171.98 = 74.14 : x
  2. Step 2: Convert to fraction form
    114.84/171.98 = 74.14/x
  3. Step 3: Cross multiply
    114.84x = 171.98 × 74.14
  4. Step 4: Simplify right side
    114.84x = 12,750.78
  5. Step 5: Solve for x
    x = 12,750.78/114.84
  6. Step 6: Final answer
    x = 111.03

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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.