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Finding the Fourth Proportional to 635.55, 953.30 and 173.31

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Solution

The fourth proportional to 635.55, 953.30 and 173.31 is: 259.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    635.55 : 953.30 = 173.31 : x
  2. Step 2: Convert to fraction form
    635.55/953.30 = 173.31/x
  3. Step 3: Cross multiply
    635.55x = 953.30 × 173.31
  4. Step 4: Simplify right side
    635.55x = 165,216.42
  5. Step 5: Solve for x
    x = 165,216.42/635.55
  6. Step 6: Final answer
    x = 259.96

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.