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Finding the Fourth Proportional to 29.91, 45.08 and 25.46

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Solution

The fourth proportional to 29.91, 45.08 and 25.46 is: 38.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    29.91 : 45.08 = 25.46 : x
  2. Step 2: Convert to fraction form
    29.91/45.08 = 25.46/x
  3. Step 3: Cross multiply
    29.91x = 45.08 × 25.46
  4. Step 4: Simplify right side
    29.91x = 1,147.38
  5. Step 5: Solve for x
    x = 1,147.38/29.91
  6. Step 6: Final answer
    x = 38.36

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.