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Finding the Fourth Proportional to 398.08, 548.16 and 369.04

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Solution

The fourth proportional to 398.08, 548.16 and 369.04 is: 508.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    398.08 : 548.16 = 369.04 : x
  2. Step 2: Convert to fraction form
    398.08/548.16 = 369.04/x
  3. Step 3: Cross multiply
    398.08x = 548.16 × 369.04
  4. Step 4: Simplify right side
    398.08x = 202,292.97
  5. Step 5: Solve for x
    x = 202,292.97/398.08
  6. Step 6: Final answer
    x = 508.17

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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.