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Finding the Fourth Proportional to 563.22, 777 and 342.08

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Solution

The fourth proportional to 563.22, 777 and 342.08 is: 471.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    563.22 : 777 = 342.08 : x
  2. Step 2: Convert to fraction form
    563.22/777 = 342.08/x
  3. Step 3: Cross multiply
    563.22x = 777 × 342.08
  4. Step 4: Simplify right side
    563.22x = 265,796.16
  5. Step 5: Solve for x
    x = 265,796.16/563.22
  6. Step 6: Final answer
    x = 471.92

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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.