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Finding the Fourth Proportional to 563.69, 778.64 and 511.29

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Solution

The fourth proportional to 563.69, 778.64 and 511.29 is: 706.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    563.69 : 778.64 = 511.29 : x
  2. Step 2: Convert to fraction form
    563.69/778.64 = 511.29/x
  3. Step 3: Cross multiply
    563.69x = 778.64 × 511.29
  4. Step 4: Simplify right side
    563.69x = 398,110.85
  5. Step 5: Solve for x
    x = 398,110.85/563.69
  6. Step 6: Final answer
    x = 706.26

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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.