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Finding the Fourth Proportional to 384.81, 576.05 and 275.27

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Solution

The fourth proportional to 384.81, 576.05 and 275.27 is: 412.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    384.81 : 576.05 = 275.27 : x
  2. Step 2: Convert to fraction form
    384.81/576.05 = 275.27/x
  3. Step 3: Cross multiply
    384.81x = 576.05 × 275.27
  4. Step 4: Simplify right side
    384.81x = 158,565.03
  5. Step 5: Solve for x
    x = 158,565.03/384.81
  6. Step 6: Final answer
    x = 412.06

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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.