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Finding the Fourth Proportional to 383.60, 575.19 and 262

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Solution

The fourth proportional to 383.60, 575.19 and 262 is: 392.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    383.60 : 575.19 = 262 : x
  2. Step 2: Convert to fraction form
    383.60/575.19 = 262/x
  3. Step 3: Cross multiply
    383.60x = 575.19 × 262
  4. Step 4: Simplify right side
    383.60x = 150,699.78
  5. Step 5: Solve for x
    x = 150,699.78/383.60
  6. Step 6: Final answer
    x = 392.86

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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.