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Finding the Fourth Proportional to 560.29, 772.69 and 403.96

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Solution

The fourth proportional to 560.29, 772.69 and 403.96 is: 557.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    560.29 : 772.69 = 403.96 : x
  2. Step 2: Convert to fraction form
    560.29/772.69 = 403.96/x
  3. Step 3: Cross multiply
    560.29x = 772.69 × 403.96
  4. Step 4: Simplify right side
    560.29x = 312,135.85
  5. Step 5: Solve for x
    x = 312,135.85/560.29
  6. Step 6: Final answer
    x = 557.10

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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.