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Finding the Fourth Proportional to 560.73, 773.87 and 339.78

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Solution

The fourth proportional to 560.73, 773.87 and 339.78 is: 468.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    560.73 : 773.87 = 339.78 : x
  2. Step 2: Convert to fraction form
    560.73/773.87 = 339.78/x
  3. Step 3: Cross multiply
    560.73x = 773.87 × 339.78
  4. Step 4: Simplify right side
    560.73x = 262,943.85
  5. Step 5: Solve for x
    x = 262,943.85/560.73
  6. Step 6: Final answer
    x = 468.93

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1.5x scale

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.