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Finding the Fourth Proportional to 398.10, 594.26 and 349.50

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Solution

The fourth proportional to 398.10, 594.26 and 349.50 is: 521.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    398.10 : 594.26 = 349.50 : x
  2. Step 2: Convert to fraction form
    398.10/594.26 = 349.50/x
  3. Step 3: Cross multiply
    398.10x = 594.26 × 349.50
  4. Step 4: Simplify right side
    398.10x = 207,694.74
  5. Step 5: Solve for x
    x = 207,694.74/398.10
  6. Step 6: Final answer
    x = 521.72

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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.