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Finding the Fourth Proportional to 630, 869.38 and 350.23

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Solution

The fourth proportional to 630, 869.38 and 350.23 is: 483.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    630 : 869.38 = 350.23 : x
  2. Step 2: Convert to fraction form
    630/869.38 = 350.23/x
  3. Step 3: Cross multiply
    630x = 869.38 × 350.23
  4. Step 4: Simplify right side
    630x = 304,479.91
  5. Step 5: Solve for x
    x = 304,479.91/630
  6. Step 6: Final answer
    x = 483.30

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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.