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Finding the Fourth Proportional to 443.39, 611.93 and 266.45

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Solution

The fourth proportional to 443.39, 611.93 and 266.45 is: 367.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    443.39 : 611.93 = 266.45 : x
  2. Step 2: Convert to fraction form
    443.39/611.93 = 266.45/x
  3. Step 3: Cross multiply
    443.39x = 611.93 × 266.45
  4. Step 4: Simplify right side
    443.39x = 163,044.36
  5. Step 5: Solve for x
    x = 163,044.36/443.39
  6. Step 6: Final answer
    x = 367.73

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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.