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Finding the Fourth Proportional to 630, 869.36 and 350.22

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Solution

The fourth proportional to 630, 869.36 and 350.22 is: 483.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    630 : 869.36 = 350.22 : x
  2. Step 2: Convert to fraction form
    630/869.36 = 350.22/x
  3. Step 3: Cross multiply
    630x = 869.36 × 350.22
  4. Step 4: Simplify right side
    630x = 304,467.26
  5. Step 5: Solve for x
    x = 304,467.26/630
  6. Step 6: Final answer
    x = 483.28

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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.