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Finding the Fourth Proportional to 14.61, 21.94 and 7.49

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Solution

The fourth proportional to 14.61, 21.94 and 7.49 is: 11.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    14.61 : 21.94 = 7.49 : x
  2. Step 2: Convert to fraction form
    14.61/21.94 = 7.49/x
  3. Step 3: Cross multiply
    14.61x = 21.94 × 7.49
  4. Step 4: Simplify right side
    14.61x = 164.29
  5. Step 5: Solve for x
    x = 164.29/14.61
  6. Step 6: Final answer
    x = 11.25

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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.