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Finding the Fourth Proportional to 11.02, 16.49 and 7.63

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Solution

The fourth proportional to 11.02, 16.49 and 7.63 is: 11.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    11.02 : 16.49 = 7.63 : x
  2. Step 2: Convert to fraction form
    11.02/16.49 = 7.63/x
  3. Step 3: Cross multiply
    11.02x = 16.49 × 7.63
  4. Step 4: Simplify right side
    11.02x = 125.76
  5. Step 5: Solve for x
    x = 125.76/11.02
  6. Step 6: Final answer
    x = 11.41

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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.