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Finding the Fourth Proportional to 563.27, 777.20 and 327.15

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Solution

The fourth proportional to 563.27, 777.20 and 327.15 is: 451.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    563.27 : 777.20 = 327.15 : x
  2. Step 2: Convert to fraction form
    563.27/777.20 = 327.15/x
  3. Step 3: Cross multiply
    563.27x = 777.20 × 327.15
  4. Step 4: Simplify right side
    563.27x = 254,259.34
  5. Step 5: Solve for x
    x = 254,259.34/563.27
  6. Step 6: Final answer
    x = 451.40

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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.