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Finding the Fourth Proportional to 383.22, 527.86 and 272.50

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Solution

The fourth proportional to 383.22, 527.86 and 272.50 is: 375.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    383.22 : 527.86 = 272.50 : x
  2. Step 2: Convert to fraction form
    383.22/527.86 = 272.50/x
  3. Step 3: Cross multiply
    383.22x = 527.86 × 272.50
  4. Step 4: Simplify right side
    383.22x = 143,841.85
  5. Step 5: Solve for x
    x = 143,841.85/383.22
  6. Step 6: Final answer
    x = 375.35

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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.