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Finding the Fourth Proportional to 807.97, 1,114.99 and 453.91

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Solution

The fourth proportional to 807.97, 1,114.99 and 453.91 is: 626.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    807.97 : 1,114.99 = 453.91 : x
  2. Step 2: Convert to fraction form
    807.97/1,114.99 = 453.91/x
  3. Step 3: Cross multiply
    807.97x = 1,114.99 × 453.91
  4. Step 4: Simplify right side
    807.97x = 506,105.11
  5. Step 5: Solve for x
    x = 506,105.11/807.97
  6. Step 6: Final answer
    x = 626.39

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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.