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Finding the Fourth Proportional to 443.32, 611.79 and 266.31

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Solution

The fourth proportional to 443.32, 611.79 and 266.31 is: 367.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    443.32 : 611.79 = 266.31 : x
  2. Step 2: Convert to fraction form
    443.32/611.79 = 266.31/x
  3. Step 3: Cross multiply
    443.32x = 611.79 × 266.31
  4. Step 4: Simplify right side
    443.32x = 162,925.79
  5. Step 5: Solve for x
    x = 162,925.79/443.32
  6. Step 6: Final answer
    x = 367.51

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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.