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Finding the Fourth Proportional to 443.33, 662.01 and 385.70

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Solution

The fourth proportional to 443.33, 662.01 and 385.70 is: 575.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    443.33 : 662.01 = 385.70 : x
  2. Step 2: Convert to fraction form
    443.33/662.01 = 385.70/x
  3. Step 3: Cross multiply
    443.33x = 662.01 × 385.70
  4. Step 4: Simplify right side
    443.33x = 255,333.95
  5. Step 5: Solve for x
    x = 255,333.95/443.33
  6. Step 6: Final answer
    x = 575.95

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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.