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Finding the Fourth Proportional to 443.61, 668.05 and 371.18

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Solution

The fourth proportional to 443.61, 668.05 and 371.18 is: 558.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    443.61 : 668.05 = 371.18 : x
  2. Step 2: Convert to fraction form
    443.61/668.05 = 371.18/x
  3. Step 3: Cross multiply
    443.61x = 668.05 × 371.18
  4. Step 4: Simplify right side
    443.61x = 247,967.54
  5. Step 5: Solve for x
    x = 247,967.54/443.61
  6. Step 6: Final answer
    x = 558.98

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.