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Finding the Fourth Proportional to 563.32, 776.92 and 397.48

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Solution

The fourth proportional to 563.32, 776.92 and 397.48 is: 548.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    563.32 : 776.92 = 397.48 : x
  2. Step 2: Convert to fraction form
    563.32/776.92 = 397.48/x
  3. Step 3: Cross multiply
    563.32x = 776.92 × 397.48
  4. Step 4: Simplify right side
    563.32x = 308,810.16
  5. Step 5: Solve for x
    x = 308,810.16/563.32
  6. Step 6: Final answer
    x = 548.20

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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.