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Finding the Fourth Proportional to 152.89, 229.03 and 75.80

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Solution

The fourth proportional to 152.89, 229.03 and 75.80 is: 113.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    152.89 : 229.03 = 75.80 : x
  2. Step 2: Convert to fraction form
    152.89/229.03 = 75.80/x
  3. Step 3: Cross multiply
    152.89x = 229.03 × 75.80
  4. Step 4: Simplify right side
    152.89x = 17,360.86
  5. Step 5: Solve for x
    x = 17,360.86/152.89
  6. Step 6: Final answer
    x = 113.55

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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.