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Finding the Fourth Proportional to 850.95, 1,275.53 and 484.95

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Solution

The fourth proportional to 850.95, 1,275.53 and 484.95 is: 726.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    850.95 : 1,275.53 = 484.95 : x
  2. Step 2: Convert to fraction form
    850.95/1,275.53 = 484.95/x
  3. Step 3: Cross multiply
    850.95x = 1,275.53 × 484.95
  4. Step 4: Simplify right side
    850.95x = 618,568.27
  5. Step 5: Solve for x
    x = 618,568.27/850.95
  6. Step 6: Final answer
    x = 726.91

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.