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Finding the Fourth Proportional to 125.98, 186.40 and 125.62

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Solution

The fourth proportional to 125.98, 186.40 and 125.62 is: 185.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    125.98 : 186.40 = 125.62 : x
  2. Step 2: Convert to fraction form
    125.98/186.40 = 125.62/x
  3. Step 3: Cross multiply
    125.98x = 186.40 × 125.62
  4. Step 4: Simplify right side
    125.98x = 23,415.57
  5. Step 5: Solve for x
    x = 23,415.57/125.98
  6. Step 6: Final answer
    x = 185.87

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Why These Related Problems?

These problems maintain the same ratio (1.48) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.