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Finding the Fourth Proportional to 1,092.98, 1,639.95 and 800.76

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Solution

The fourth proportional to 1,092.98, 1,639.95 and 800.76 is: 1,201.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,092.98 : 1,639.95 = 800.76 : x
  2. Step 2: Convert to fraction form
    1,092.98/1,639.95 = 800.76/x
  3. Step 3: Cross multiply
    1,092.98x = 1,639.95 × 800.76
  4. Step 4: Simplify right side
    1,092.98x = 1,313,206.36
  5. Step 5: Solve for x
    x = 1,313,206.36/1,092.98
  6. Step 6: Final answer
    x = 1,201.49

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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.