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Finding the Fourth Proportional to 1,336.95, 1,845.45 and 806.13

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Solution

The fourth proportional to 1,336.95, 1,845.45 and 806.13 is: 1,112.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,336.95 : 1,845.45 = 806.13 : x
  2. Step 2: Convert to fraction form
    1,336.95/1,845.45 = 806.13/x
  3. Step 3: Cross multiply
    1,336.95x = 1,845.45 × 806.13
  4. Step 4: Simplify right side
    1,336.95x = 1,487,672.61
  5. Step 5: Solve for x
    x = 1,487,672.61/1,336.95
  6. Step 6: Final answer
    x = 1,112.74

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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.