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Finding the Fourth Proportional to 563.92, 778.28 and 342.88

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Solution

The fourth proportional to 563.92, 778.28 and 342.88 is: 473.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    563.92 : 778.28 = 342.88 : x
  2. Step 2: Convert to fraction form
    563.92/778.28 = 342.88/x
  3. Step 3: Cross multiply
    563.92x = 778.28 × 342.88
  4. Step 4: Simplify right side
    563.92x = 266,856.65
  5. Step 5: Solve for x
    x = 266,856.65/563.92
  6. Step 6: Final answer
    x = 473.22

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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.