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Finding the Fourth Proportional to 1,337.76, 1,845.60 and 806.80

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Solution

The fourth proportional to 1,337.76, 1,845.60 and 806.80 is: 1,113.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,337.76 : 1,845.60 = 806.80 : x
  2. Step 2: Convert to fraction form
    1,337.76/1,845.60 = 806.80/x
  3. Step 3: Cross multiply
    1,337.76x = 1,845.60 × 806.80
  4. Step 4: Simplify right side
    1,337.76x = 1,489,030.08
  5. Step 5: Solve for x
    x = 1,489,030.08/1,337.76
  6. Step 6: Final answer
    x = 1,113.08

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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.