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Finding the Fourth Proportional to 1,092.74, 1,640.74 and 444.74

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Solution

The fourth proportional to 1,092.74, 1,640.74 and 444.74 is: 667.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,092.74 : 1,640.74 = 444.74 : x
  2. Step 2: Convert to fraction form
    1,092.74/1,640.74 = 444.74/x
  3. Step 3: Cross multiply
    1,092.74x = 1,640.74 × 444.74
  4. Step 4: Simplify right side
    1,092.74x = 729,702.71
  5. Step 5: Solve for x
    x = 729,702.71/1,092.74
  6. Step 6: Final answer
    x = 667.77

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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.