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Finding the Fourth Proportional to 24.31, 36.47 and 12.30

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Solution

The fourth proportional to 24.31, 36.47 and 12.30 is: 18.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    24.31 : 36.47 = 12.30 : x
  2. Step 2: Convert to fraction form
    24.31/36.47 = 12.30/x
  3. Step 3: Cross multiply
    24.31x = 36.47 × 12.30
  4. Step 4: Simplify right side
    24.31x = 448.58
  5. Step 5: Solve for x
    x = 448.58/24.31
  6. Step 6: Final answer
    x = 18.45

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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.