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Finding the Fourth Proportional to 18.19, 24.76 and 18.16

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Solution

The fourth proportional to 18.19, 24.76 and 18.16 is: 24.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    18.19 : 24.76 = 18.16 : x
  2. Step 2: Convert to fraction form
    18.19/24.76 = 18.16/x
  3. Step 3: Cross multiply
    18.19x = 24.76 × 18.16
  4. Step 4: Simplify right side
    18.19x = 449.64
  5. Step 5: Solve for x
    x = 449.64/18.19
  6. Step 6: Final answer
    x = 24.72

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Why These Related Problems?

These problems maintain the same ratio (1.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.