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Finding the Fourth Proportional to 153.80, 230.22 and 125

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Solution

The fourth proportional to 153.80, 230.22 and 125 is: 187.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    153.80 : 230.22 = 125 : x
  2. Step 2: Convert to fraction form
    153.80/230.22 = 125/x
  3. Step 3: Cross multiply
    153.80x = 230.22 × 125
  4. Step 4: Simplify right side
    153.80x = 28,777.50
  5. Step 5: Solve for x
    x = 28,777.50/153.80
  6. Step 6: Final answer
    x = 187.11

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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.