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Finding the Fourth Proportional to 806.79, 1,113.44 and 544.71

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Solution

The fourth proportional to 806.79, 1,113.44 and 544.71 is: 751.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    806.79 : 1,113.44 = 544.71 : x
  2. Step 2: Convert to fraction form
    806.79/1,113.44 = 544.71/x
  3. Step 3: Cross multiply
    806.79x = 1,113.44 × 544.71
  4. Step 4: Simplify right side
    806.79x = 606,499.18
  5. Step 5: Solve for x
    x = 606,499.18/806.79
  6. Step 6: Final answer
    x = 751.74

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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.