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Finding the Fourth Proportional to 806.59, 1,114.01 and 571.13

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Solution

The fourth proportional to 806.59, 1,114.01 and 571.13 is: 788.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    806.59 : 1,114.01 = 571.13 : x
  2. Step 2: Convert to fraction form
    806.59/1,114.01 = 571.13/x
  3. Step 3: Cross multiply
    806.59x = 1,114.01 × 571.13
  4. Step 4: Simplify right side
    806.59x = 636,244.53
  5. Step 5: Solve for x
    x = 636,244.53/806.59
  6. Step 6: Final answer
    x = 788.81

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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.