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Finding the Fourth Proportional to 1,105.13, 1,525.49 and 732.23

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Solution

The fourth proportional to 1,105.13, 1,525.49 and 732.23 is: 1,010.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,105.13 : 1,525.49 = 732.23 : x
  2. Step 2: Convert to fraction form
    1,105.13/1,525.49 = 732.23/x
  3. Step 3: Cross multiply
    1,105.13x = 1,525.49 × 732.23
  4. Step 4: Simplify right side
    1,105.13x = 1,117,012.44
  5. Step 5: Solve for x
    x = 1,117,012.44/1,105.13
  6. Step 6: Final answer
    x = 1,010.75

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.