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Finding the Fourth Proportional to 910.41, 1,255.60 and 560.49

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Solution

The fourth proportional to 910.41, 1,255.60 and 560.49 is: 773.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    910.41 : 1,255.60 = 560.49 : x
  2. Step 2: Convert to fraction form
    910.41/1,255.60 = 560.49/x
  3. Step 3: Cross multiply
    910.41x = 1,255.60 × 560.49
  4. Step 4: Simplify right side
    910.41x = 703,751.24
  5. Step 5: Solve for x
    x = 703,751.24/910.41
  6. Step 6: Final answer
    x = 773.00

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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.