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Finding the Fourth Proportional to 29.68, 40.89 and 25.58

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Solution

The fourth proportional to 29.68, 40.89 and 25.58 is: 35.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    29.68 : 40.89 = 25.58 : x
  2. Step 2: Convert to fraction form
    29.68/40.89 = 25.58/x
  3. Step 3: Cross multiply
    29.68x = 40.89 × 25.58
  4. Step 4: Simplify right side
    29.68x = 1,046.16
  5. Step 5: Solve for x
    x = 1,046.16/29.68
  6. Step 6: Final answer
    x = 35.25

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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.