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Finding the Fourth Proportional to 383.12, 528.54 and 277.94

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Solution

The fourth proportional to 383.12, 528.54 and 277.94 is: 383.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    383.12 : 528.54 = 277.94 : x
  2. Step 2: Convert to fraction form
    383.12/528.54 = 277.94/x
  3. Step 3: Cross multiply
    383.12x = 528.54 × 277.94
  4. Step 4: Simplify right side
    383.12x = 146,902.41
  5. Step 5: Solve for x
    x = 146,902.41/383.12
  6. Step 6: Final answer
    x = 383.44

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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.