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Finding the Fourth Proportional to 25.04, 34.52 and 16.85

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Solution

The fourth proportional to 25.04, 34.52 and 16.85 is: 23.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    25.04 : 34.52 = 16.85 : x
  2. Step 2: Convert to fraction form
    25.04/34.52 = 16.85/x
  3. Step 3: Cross multiply
    25.04x = 34.52 × 16.85
  4. Step 4: Simplify right side
    25.04x = 581.41
  5. Step 5: Solve for x
    x = 581.41/25.04
  6. Step 6: Final answer
    x = 23.22

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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.