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Finding the Fourth Proportional to 349.08, 521.13 and 297.18

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Solution

The fourth proportional to 349.08, 521.13 and 297.18 is: 443.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    349.08 : 521.13 = 297.18 : x
  2. Step 2: Convert to fraction form
    349.08/521.13 = 297.18/x
  3. Step 3: Cross multiply
    349.08x = 521.13 × 297.18
  4. Step 4: Simplify right side
    349.08x = 154,869.41
  5. Step 5: Solve for x
    x = 154,869.41/349.08
  6. Step 6: Final answer
    x = 443.65

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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.