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Finding the Fourth Proportional to 384.81, 576.97 and 262.70

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Solution

The fourth proportional to 384.81, 576.97 and 262.70 is: 393.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    384.81 : 576.97 = 262.70 : x
  2. Step 2: Convert to fraction form
    384.81/576.97 = 262.70/x
  3. Step 3: Cross multiply
    384.81x = 576.97 × 262.70
  4. Step 4: Simplify right side
    384.81x = 151,570.02
  5. Step 5: Solve for x
    x = 151,570.02/384.81
  6. Step 6: Final answer
    x = 393.88

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.