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Finding the Fourth Proportional to 631.24, 944.81 and 543.76

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Solution

The fourth proportional to 631.24, 944.81 and 543.76 is: 813.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    631.24 : 944.81 = 543.76 : x
  2. Step 2: Convert to fraction form
    631.24/944.81 = 543.76/x
  3. Step 3: Cross multiply
    631.24x = 944.81 × 543.76
  4. Step 4: Simplify right side
    631.24x = 513,742.44
  5. Step 5: Solve for x
    x = 513,742.44/631.24
  6. Step 6: Final answer
    x = 813.87

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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.