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Finding the Fourth Proportional to 15.08, 22.50 and 12.92

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Solution

The fourth proportional to 15.08, 22.50 and 12.92 is: 19.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    15.08 : 22.50 = 12.92 : x
  2. Step 2: Convert to fraction form
    15.08/22.50 = 12.92/x
  3. Step 3: Cross multiply
    15.08x = 22.50 × 12.92
  4. Step 4: Simplify right side
    15.08x = 290.70
  5. Step 5: Solve for x
    x = 290.70/15.08
  6. Step 6: Final answer
    x = 19.28

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.