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Finding the Fourth Proportional to 839.94, 1,159.33 and 560.26

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Solution

The fourth proportional to 839.94, 1,159.33 and 560.26 is: 773.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    839.94 : 1,159.33 = 560.26 : x
  2. Step 2: Convert to fraction form
    839.94/1,159.33 = 560.26/x
  3. Step 3: Cross multiply
    839.94x = 1,159.33 × 560.26
  4. Step 4: Simplify right side
    839.94x = 649,526.23
  5. Step 5: Solve for x
    x = 649,526.23/839.94
  6. Step 6: Final answer
    x = 773.30

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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.