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Finding the Fourth Proportional to 1,101.67, 1,520.28 and 604.30

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Solution

The fourth proportional to 1,101.67, 1,520.28 and 604.30 is: 833.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,101.67 : 1,520.28 = 604.30 : x
  2. Step 2: Convert to fraction form
    1,101.67/1,520.28 = 604.30/x
  3. Step 3: Cross multiply
    1,101.67x = 1,520.28 × 604.30
  4. Step 4: Simplify right side
    1,101.67x = 918,705.20
  5. Step 5: Solve for x
    x = 918,705.20/1,101.67
  6. Step 6: Final answer
    x = 833.92

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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.