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Finding the Fourth Proportional to 14.49, 21.65 and 11.59

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Solution

The fourth proportional to 14.49, 21.65 and 11.59 is: 17.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    14.49 : 21.65 = 11.59 : x
  2. Step 2: Convert to fraction form
    14.49/21.65 = 11.59/x
  3. Step 3: Cross multiply
    14.49x = 21.65 × 11.59
  4. Step 4: Simplify right side
    14.49x = 250.92
  5. Step 5: Solve for x
    x = 250.92/14.49
  6. Step 6: Final answer
    x = 17.32

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.