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Finding the Fourth Proportional to 630.54, 944.42 and 386.33

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Solution

The fourth proportional to 630.54, 944.42 and 386.33 is: 578.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    630.54 : 944.42 = 386.33 : x
  2. Step 2: Convert to fraction form
    630.54/944.42 = 386.33/x
  3. Step 3: Cross multiply
    630.54x = 944.42 × 386.33
  4. Step 4: Simplify right side
    630.54x = 364,851.12
  5. Step 5: Solve for x
    x = 364,851.12/630.54
  6. Step 6: Final answer
    x = 578.63

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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.