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Finding the Fourth Proportional to 443.79, 611.87 and 277.94

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Solution

The fourth proportional to 443.79, 611.87 and 277.94 is: 383.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    443.79 : 611.87 = 277.94 : x
  2. Step 2: Convert to fraction form
    443.79/611.87 = 277.94/x
  3. Step 3: Cross multiply
    443.79x = 611.87 × 277.94
  4. Step 4: Simplify right side
    443.79x = 170,058.70
  5. Step 5: Solve for x
    x = 170,058.70/443.79
  6. Step 6: Final answer
    x = 383.20

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.