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Finding the Fourth Proportional to 398.12, 547.98 and 366.26

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Solution

The fourth proportional to 398.12, 547.98 and 366.26 is: 504.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    398.12 : 547.98 = 366.26 : x
  2. Step 2: Convert to fraction form
    398.12/547.98 = 366.26/x
  3. Step 3: Cross multiply
    398.12x = 547.98 × 366.26
  4. Step 4: Simplify right side
    398.12x = 200,703.15
  5. Step 5: Solve for x
    x = 200,703.15/398.12
  6. Step 6: Final answer
    x = 504.13

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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.