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Finding the Fourth Proportional to 635.76, 953.58 and 173.55

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Solution

The fourth proportional to 635.76, 953.58 and 173.55 is: 260.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    635.76 : 953.58 = 173.55 : x
  2. Step 2: Convert to fraction form
    635.76/953.58 = 173.55/x
  3. Step 3: Cross multiply
    635.76x = 953.58 × 173.55
  4. Step 4: Simplify right side
    635.76x = 165,493.81
  5. Step 5: Solve for x
    x = 165,493.81/635.76
  6. Step 6: Final answer
    x = 260.31

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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.