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Finding the Fourth Proportional to 563.74, 777.26 and 431.12

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Solution

The fourth proportional to 563.74, 777.26 and 431.12 is: 594.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    563.74 : 777.26 = 431.12 : x
  2. Step 2: Convert to fraction form
    563.74/777.26 = 431.12/x
  3. Step 3: Cross multiply
    563.74x = 777.26 × 431.12
  4. Step 4: Simplify right side
    563.74x = 335,090.18
  5. Step 5: Solve for x
    x = 335,090.18/563.74
  6. Step 6: Final answer
    x = 594.41

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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.