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Finding the Fourth Proportional to 636.02, 870.15 and 633.29

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Solution

The fourth proportional to 636.02, 870.15 and 633.29 is: 866.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    636.02 : 870.15 = 633.29 : x
  2. Step 2: Convert to fraction form
    636.02/870.15 = 633.29/x
  3. Step 3: Cross multiply
    636.02x = 870.15 × 633.29
  4. Step 4: Simplify right side
    636.02x = 551,057.29
  5. Step 5: Solve for x
    x = 551,057.29/636.02
  6. Step 6: Final answer
    x = 866.42

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.