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Finding the Fourth Proportional to 563.74, 845.12 and 399.29

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Solution

The fourth proportional to 563.74, 845.12 and 399.29 is: 598.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    563.74 : 845.12 = 399.29 : x
  2. Step 2: Convert to fraction form
    563.74/845.12 = 399.29/x
  3. Step 3: Cross multiply
    563.74x = 845.12 × 399.29
  4. Step 4: Simplify right side
    563.74x = 337,444.74
  5. Step 5: Solve for x
    x = 337,444.74/563.74
  6. Step 6: Final answer
    x = 598.58

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.