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Finding the Fourth Proportional to 217.08, 325.16 and 207.05

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Solution

The fourth proportional to 217.08, 325.16 and 207.05 is: 310.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    217.08 : 325.16 = 207.05 : x
  2. Step 2: Convert to fraction form
    217.08/325.16 = 207.05/x
  3. Step 3: Cross multiply
    217.08x = 325.16 × 207.05
  4. Step 4: Simplify right side
    217.08x = 67,323.34
  5. Step 5: Solve for x
    x = 67,323.34/217.08
  6. Step 6: Final answer
    x = 310.14

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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.