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Finding the Fourth Proportional to 251.64, 375.66 and 217.08

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Solution

The fourth proportional to 251.64, 375.66 and 217.08 is: 324.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    251.64 : 375.66 = 217.08 : x
  2. Step 2: Convert to fraction form
    251.64/375.66 = 217.08/x
  3. Step 3: Cross multiply
    251.64x = 375.66 × 217.08
  4. Step 4: Simplify right side
    251.64x = 81,548.27
  5. Step 5: Solve for x
    x = 81,548.27/251.64
  6. Step 6: Final answer
    x = 324.07

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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.