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Finding the Fourth Proportional to 349.92, 521.92 and 300.60

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Solution

The fourth proportional to 349.92, 521.92 and 300.60 is: 448.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    349.92 : 521.92 = 300.60 : x
  2. Step 2: Convert to fraction form
    349.92/521.92 = 300.60/x
  3. Step 3: Cross multiply
    349.92x = 521.92 × 300.60
  4. Step 4: Simplify right side
    349.92x = 156,887.95
  5. Step 5: Solve for x
    x = 156,887.95/349.92
  6. Step 6: Final answer
    x = 448.35

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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.