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Finding the Fourth Proportional to 25.98, 35.86 and 17.80

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Solution

The fourth proportional to 25.98, 35.86 and 17.80 is: 24.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    25.98 : 35.86 = 17.80 : x
  2. Step 2: Convert to fraction form
    25.98/35.86 = 17.80/x
  3. Step 3: Cross multiply
    25.98x = 35.86 × 17.80
  4. Step 4: Simplify right side
    25.98x = 638.31
  5. Step 5: Solve for x
    x = 638.31/25.98
  6. Step 6: Final answer
    x = 24.57

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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.