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Finding the Fourth Proportional to 630.14, 944.90 and 259.88

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Solution

The fourth proportional to 630.14, 944.90 and 259.88 is: 389.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    630.14 : 944.90 = 259.88 : x
  2. Step 2: Convert to fraction form
    630.14/944.90 = 259.88/x
  3. Step 3: Cross multiply
    630.14x = 944.90 × 259.88
  4. Step 4: Simplify right side
    630.14x = 245,560.61
  5. Step 5: Solve for x
    x = 245,560.61/630.14
  6. Step 6: Final answer
    x = 389.69

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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.