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Finding the Fourth Proportional to 636.24, 949.29 and 528.24

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Solution

The fourth proportional to 636.24, 949.29 and 528.24 is: 788.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    636.24 : 949.29 = 528.24 : x
  2. Step 2: Convert to fraction form
    636.24/949.29 = 528.24/x
  3. Step 3: Cross multiply
    636.24x = 949.29 × 528.24
  4. Step 4: Simplify right side
    636.24x = 501,452.95
  5. Step 5: Solve for x
    x = 501,452.95/636.24
  6. Step 6: Final answer
    x = 788.15

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.