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Finding the Fourth Proportional to 630.09, 943.77 and 385.88

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Solution

The fourth proportional to 630.09, 943.77 and 385.88 is: 577.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    630.09 : 943.77 = 385.88 : x
  2. Step 2: Convert to fraction form
    630.09/943.77 = 385.88/x
  3. Step 3: Cross multiply
    630.09x = 943.77 × 385.88
  4. Step 4: Simplify right side
    630.09x = 364,181.97
  5. Step 5: Solve for x
    x = 364,181.97/630.09
  6. Step 6: Final answer
    x = 577.98

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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.