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Finding the Fourth Proportional to 560.91, 773.90 and 339.86

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Solution

The fourth proportional to 560.91, 773.90 and 339.86 is: 468.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    560.91 : 773.90 = 339.86 : x
  2. Step 2: Convert to fraction form
    560.91/773.90 = 339.86/x
  3. Step 3: Cross multiply
    560.91x = 773.90 × 339.86
  4. Step 4: Simplify right side
    560.91x = 263,012.09
  5. Step 5: Solve for x
    x = 263,012.09/560.91
  6. Step 6: Final answer
    x = 468.90

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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.