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Finding the Fourth Proportional to 635.58, 881.42 and 615.60

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Solution

The fourth proportional to 635.58, 881.42 and 615.60 is: 853.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    635.58 : 881.42 = 615.60 : x
  2. Step 2: Convert to fraction form
    635.58/881.42 = 615.60/x
  3. Step 3: Cross multiply
    635.58x = 881.42 × 615.60
  4. Step 4: Simplify right side
    635.58x = 542,599.07
  5. Step 5: Solve for x
    x = 542,599.07/635.58
  6. Step 6: Final answer
    x = 853.71

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.