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Finding the Fourth Proportional to 61.58, 92.38 and 18.24

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Solution

The fourth proportional to 61.58, 92.38 and 18.24 is: 27.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    61.58 : 92.38 = 18.24 : x
  2. Step 2: Convert to fraction form
    61.58/92.38 = 18.24/x
  3. Step 3: Cross multiply
    61.58x = 92.38 × 18.24
  4. Step 4: Simplify right side
    61.58x = 1,685.01
  5. Step 5: Solve for x
    x = 1,685.01/61.58
  6. Step 6: Final answer
    x = 27.36

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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.