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Finding the Fourth Proportional to 216.71, 323.87 and 176.18

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Solution

The fourth proportional to 216.71, 323.87 and 176.18 is: 263.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    216.71 : 323.87 = 176.18 : x
  2. Step 2: Convert to fraction form
    216.71/323.87 = 176.18/x
  3. Step 3: Cross multiply
    216.71x = 323.87 × 176.18
  4. Step 4: Simplify right side
    216.71x = 57,056.92
  5. Step 5: Solve for x
    x = 57,056.92/216.71
  6. Step 6: Final answer
    x = 263.29

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.