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Finding the Fourth Proportional to 217.32, 299.61 and 176.01

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Solution

The fourth proportional to 217.32, 299.61 and 176.01 is: 242.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    217.32 : 299.61 = 176.01 : x
  2. Step 2: Convert to fraction form
    217.32/299.61 = 176.01/x
  3. Step 3: Cross multiply
    217.32x = 299.61 × 176.01
  4. Step 4: Simplify right side
    217.32x = 52,734.36
  5. Step 5: Solve for x
    x = 52,734.36/217.32
  6. Step 6: Final answer
    x = 242.66

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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.