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Finding the Fourth Proportional to 636.32, 877.56 and 511.95

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Solution

The fourth proportional to 636.32, 877.56 and 511.95 is: 706.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    636.32 : 877.56 = 511.95 : x
  2. Step 2: Convert to fraction form
    636.32/877.56 = 511.95/x
  3. Step 3: Cross multiply
    636.32x = 877.56 × 511.95
  4. Step 4: Simplify right side
    636.32x = 449,266.84
  5. Step 5: Solve for x
    x = 449,266.84/636.32
  6. Step 6: Final answer
    x = 706.04

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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.