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Finding the Fourth Proportional to 25.48, 35.13 and 21.37

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Solution

The fourth proportional to 25.48, 35.13 and 21.37 is: 29.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    25.48 : 35.13 = 21.37 : x
  2. Step 2: Convert to fraction form
    25.48/35.13 = 21.37/x
  3. Step 3: Cross multiply
    25.48x = 35.13 × 21.37
  4. Step 4: Simplify right side
    25.48x = 750.73
  5. Step 5: Solve for x
    x = 750.73/25.48
  6. Step 6: Final answer
    x = 29.46

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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.