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Finding the Fourth Proportional to 563.92, 778.81 and 502.84

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Solution

The fourth proportional to 563.92, 778.81 and 502.84 is: 694.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    563.92 : 778.81 = 502.84 : x
  2. Step 2: Convert to fraction form
    563.92/778.81 = 502.84/x
  3. Step 3: Cross multiply
    563.92x = 778.81 × 502.84
  4. Step 4: Simplify right side
    563.92x = 391,616.82
  5. Step 5: Solve for x
    x = 391,616.82/563.92
  6. Step 6: Final answer
    x = 694.45

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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.