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Finding the Fourth Proportional to 342.91, 514.08 and 160.21

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Solution

The fourth proportional to 342.91, 514.08 and 160.21 is: 240.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    342.91 : 514.08 = 160.21 : x
  2. Step 2: Convert to fraction form
    342.91/514.08 = 160.21/x
  3. Step 3: Cross multiply
    342.91x = 514.08 × 160.21
  4. Step 4: Simplify right side
    342.91x = 82,360.76
  5. Step 5: Solve for x
    x = 82,360.76/342.91
  6. Step 6: Final answer
    x = 240.18

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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.