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Finding the Fourth Proportional to 1,108.80, 1,655.10 and 1,035.84

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Solution

The fourth proportional to 1,108.80, 1,655.10 and 1,035.84 is: 1,546.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,108.80 : 1,655.10 = 1,035.84 : x
  2. Step 2: Convert to fraction form
    1,108.80/1,655.10 = 1,035.84/x
  3. Step 3: Cross multiply
    1,108.80x = 1,655.10 × 1,035.84
  4. Step 4: Simplify right side
    1,108.80x = 1,714,418.78
  5. Step 5: Solve for x
    x = 1,714,418.78/1,108.80
  6. Step 6: Final answer
    x = 1,546.19

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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.