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Finding the Fourth Proportional to 398.17, 596.22 and 275.15

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Solution

The fourth proportional to 398.17, 596.22 and 275.15 is: 412.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    398.17 : 596.22 = 275.15 : x
  2. Step 2: Convert to fraction form
    398.17/596.22 = 275.15/x
  3. Step 3: Cross multiply
    398.17x = 596.22 × 275.15
  4. Step 4: Simplify right side
    398.17x = 164,049.93
  5. Step 5: Solve for x
    x = 164,049.93/398.17
  6. Step 6: Final answer
    x = 412.01

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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.