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Finding the Fourth Proportional to 160.95, 241.51 and 69.72

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Solution

The fourth proportional to 160.95, 241.51 and 69.72 is: 104.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    160.95 : 241.51 = 69.72 : x
  2. Step 2: Convert to fraction form
    160.95/241.51 = 69.72/x
  3. Step 3: Cross multiply
    160.95x = 241.51 × 69.72
  4. Step 4: Simplify right side
    160.95x = 16,838.08
  5. Step 5: Solve for x
    x = 16,838.08/160.95
  6. Step 6: Final answer
    x = 104.62

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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.