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Finding the Fourth Proportional to 297.08, 443.76 and 220.19

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Solution

The fourth proportional to 297.08, 443.76 and 220.19 is: 328.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    297.08 : 443.76 = 220.19 : x
  2. Step 2: Convert to fraction form
    297.08/443.76 = 220.19/x
  3. Step 3: Cross multiply
    297.08x = 443.76 × 220.19
  4. Step 4: Simplify right side
    297.08x = 97,710.96
  5. Step 5: Solve for x
    x = 97,710.96/297.08
  6. Step 6: Final answer
    x = 328.91

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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.