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Finding the Fourth Proportional to 22.61, 31.19 and 16.13

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Solution

The fourth proportional to 22.61, 31.19 and 16.13 is: 22.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    22.61 : 31.19 = 16.13 : x
  2. Step 2: Convert to fraction form
    22.61/31.19 = 16.13/x
  3. Step 3: Cross multiply
    22.61x = 31.19 × 16.13
  4. Step 4: Simplify right side
    22.61x = 502.86
  5. Step 5: Solve for x
    x = 502.86/22.61
  6. Step 6: Final answer
    x = 22.25

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.