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Finding the Fourth Proportional to 175.19, 241.85 and 109.79

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Solution

The fourth proportional to 175.19, 241.85 and 109.79 is: 151.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    175.19 : 241.85 = 109.79 : x
  2. Step 2: Convert to fraction form
    175.19/241.85 = 109.79/x
  3. Step 3: Cross multiply
    175.19x = 241.85 × 109.79
  4. Step 4: Simplify right side
    175.19x = 26,552.71
  5. Step 5: Solve for x
    x = 26,552.71/175.19
  6. Step 6: Final answer
    x = 151.57

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.