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Finding the Fourth Proportional to 213.71, 320.34 and 176.92

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Solution

The fourth proportional to 213.71, 320.34 and 176.92 is: 265.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    213.71 : 320.34 = 176.92 : x
  2. Step 2: Convert to fraction form
    213.71/320.34 = 176.92/x
  3. Step 3: Cross multiply
    213.71x = 320.34 × 176.92
  4. Step 4: Simplify right side
    213.71x = 56,675.22
  5. Step 5: Solve for x
    x = 56,675.22/213.71
  6. Step 6: Final answer
    x = 265.20

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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.