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Finding the Fourth Proportional to 114.53, 171.82 and 53.69

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Solution

The fourth proportional to 114.53, 171.82 and 53.69 is: 80.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    114.53 : 171.82 = 53.69 : x
  2. Step 2: Convert to fraction form
    114.53/171.82 = 53.69/x
  3. Step 3: Cross multiply
    114.53x = 171.82 × 53.69
  4. Step 4: Simplify right side
    114.53x = 9,225.02
  5. Step 5: Solve for x
    x = 9,225.02/114.53
  6. Step 6: Final answer
    x = 80.55

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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.