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Finding the Fourth Proportional to 214.65, 296.26 and 131.79

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Solution

The fourth proportional to 214.65, 296.26 and 131.79 is: 181.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    214.65 : 296.26 = 131.79 : x
  2. Step 2: Convert to fraction form
    214.65/296.26 = 131.79/x
  3. Step 3: Cross multiply
    214.65x = 296.26 × 131.79
  4. Step 4: Simplify right side
    214.65x = 39,044.89
  5. Step 5: Solve for x
    x = 39,044.89/214.65
  6. Step 6: Final answer
    x = 181.90

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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.