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Finding the Fourth Proportional to 630.07, 869.48 and 350.31

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Solution

The fourth proportional to 630.07, 869.48 and 350.31 is: 483.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    630.07 : 869.48 = 350.31 : x
  2. Step 2: Convert to fraction form
    630.07/869.48 = 350.31/x
  3. Step 3: Cross multiply
    630.07x = 869.48 × 350.31
  4. Step 4: Simplify right side
    630.07x = 304,584.70
  5. Step 5: Solve for x
    x = 304,584.70/630.07
  6. Step 6: Final answer
    x = 483.42

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.