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Finding the Fourth Proportional to 630.04, 943.68 and 385.80

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Solution

The fourth proportional to 630.04, 943.68 and 385.80 is: 577.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    630.04 : 943.68 = 385.80 : x
  2. Step 2: Convert to fraction form
    630.04/943.68 = 385.80/x
  3. Step 3: Cross multiply
    630.04x = 943.68 × 385.80
  4. Step 4: Simplify right side
    630.04x = 364,071.74
  5. Step 5: Solve for x
    x = 364,071.74/630.04
  6. Step 6: Final answer
    x = 577.85

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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.