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Finding the Fourth Proportional to 571.80, 792.39 and 560.85

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Solution

The fourth proportional to 571.80, 792.39 and 560.85 is: 777.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    571.80 : 792.39 = 560.85 : x
  2. Step 2: Convert to fraction form
    571.80/792.39 = 560.85/x
  3. Step 3: Cross multiply
    571.80x = 792.39 × 560.85
  4. Step 4: Simplify right side
    571.80x = 444,411.93
  5. Step 5: Solve for x
    x = 444,411.93/571.80
  6. Step 6: Final answer
    x = 777.22

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.