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Finding the Fourth Proportional to 38.39, 53.00 and 25.29

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Solution

The fourth proportional to 38.39, 53.00 and 25.29 is: 34.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    38.39 : 53.00 = 25.29 : x
  2. Step 2: Convert to fraction form
    38.39/53.00 = 25.29/x
  3. Step 3: Cross multiply
    38.39x = 53.00 × 25.29
  4. Step 4: Simplify right side
    38.39x = 1,340.33
  5. Step 5: Solve for x
    x = 1,340.33/38.39
  6. Step 6: Final answer
    x = 34.91

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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.