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Finding the Fourth Proportional to 563.74, 777.78 and 327.64

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Solution

The fourth proportional to 563.74, 777.78 and 327.64 is: 452.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    563.74 : 777.78 = 327.64 : x
  2. Step 2: Convert to fraction form
    563.74/777.78 = 327.64/x
  3. Step 3: Cross multiply
    563.74x = 777.78 × 327.64
  4. Step 4: Simplify right side
    563.74x = 254,831.84
  5. Step 5: Solve for x
    x = 254,831.84/563.74
  6. Step 6: Final answer
    x = 452.04

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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.