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Finding the Fourth Proportional to 61.60, 92.40 and 25.48

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Solution

The fourth proportional to 61.60, 92.40 and 25.48 is: 38.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    61.60 : 92.40 = 25.48 : x
  2. Step 2: Convert to fraction form
    61.60/92.40 = 25.48/x
  3. Step 3: Cross multiply
    61.60x = 92.40 × 25.48
  4. Step 4: Simplify right side
    61.60x = 2,354.35
  5. Step 5: Solve for x
    x = 2,354.35/61.60
  6. Step 6: Final answer
    x = 38.22

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.