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Finding the Fourth Proportional to 383.04, 528.24 and 276.80

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Solution

The fourth proportional to 383.04, 528.24 and 276.80 is: 381.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    383.04 : 528.24 = 276.80 : x
  2. Step 2: Convert to fraction form
    383.04/528.24 = 276.80/x
  3. Step 3: Cross multiply
    383.04x = 528.24 × 276.80
  4. Step 4: Simplify right side
    383.04x = 146,216.83
  5. Step 5: Solve for x
    x = 146,216.83/383.04
  6. Step 6: Final answer
    x = 381.73

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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.