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Finding the Fourth Proportional to 175.53, 263.03 and 72.79

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Solution

The fourth proportional to 175.53, 263.03 and 72.79 is: 109.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    175.53 : 263.03 = 72.79 : x
  2. Step 2: Convert to fraction form
    175.53/263.03 = 72.79/x
  3. Step 3: Cross multiply
    175.53x = 263.03 × 72.79
  4. Step 4: Simplify right side
    175.53x = 19,145.95
  5. Step 5: Solve for x
    x = 19,145.95/175.53
  6. Step 6: Final answer
    x = 109.08

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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.