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Finding the Fourth Proportional to 398.84, 594.75 and 371.11

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Solution

The fourth proportional to 398.84, 594.75 and 371.11 is: 553.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    398.84 : 594.75 = 371.11 : x
  2. Step 2: Convert to fraction form
    398.84/594.75 = 371.11/x
  3. Step 3: Cross multiply
    398.84x = 594.75 × 371.11
  4. Step 4: Simplify right side
    398.84x = 220,714.61
  5. Step 5: Solve for x
    x = 220,714.61/398.84
  6. Step 6: Final answer
    x = 553.39

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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.