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Finding the Fourth Proportional to 630.31, 943.95 and 369.54

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Solution

The fourth proportional to 630.31, 943.95 and 369.54 is: 553.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    630.31 : 943.95 = 369.54 : x
  2. Step 2: Convert to fraction form
    630.31/943.95 = 369.54/x
  3. Step 3: Cross multiply
    630.31x = 943.95 × 369.54
  4. Step 4: Simplify right side
    630.31x = 348,820.72
  5. Step 5: Solve for x
    x = 348,820.72/630.31
  6. Step 6: Final answer
    x = 553.41

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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.