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Finding the Fourth Proportional to 635.95, 881.31 and 623.66

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Solution

The fourth proportional to 635.95, 881.31 and 623.66 is: 864.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    635.95 : 881.31 = 623.66 : x
  2. Step 2: Convert to fraction form
    635.95/881.31 = 623.66/x
  3. Step 3: Cross multiply
    635.95x = 881.31 × 623.66
  4. Step 4: Simplify right side
    635.95x = 549,635.73
  5. Step 5: Solve for x
    x = 549,635.73/635.95
  6. Step 6: Final answer
    x = 864.27

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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.