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Finding the Fourth Proportional to 1,102.28, 1,521.06 and 604.92

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Solution

The fourth proportional to 1,102.28, 1,521.06 and 604.92 is: 834.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,102.28 : 1,521.06 = 604.92 : x
  2. Step 2: Convert to fraction form
    1,102.28/1,521.06 = 604.92/x
  3. Step 3: Cross multiply
    1,102.28x = 1,521.06 × 604.92
  4. Step 4: Simplify right side
    1,102.28x = 920,119.62
  5. Step 5: Solve for x
    x = 920,119.62/1,102.28
  6. Step 6: Final answer
    x = 834.74

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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.