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Finding the Fourth Proportional to 382.86, 527.45 and 336.15

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Solution

The fourth proportional to 382.86, 527.45 and 336.15 is: 463.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    382.86 : 527.45 = 336.15 : x
  2. Step 2: Convert to fraction form
    382.86/527.45 = 336.15/x
  3. Step 3: Cross multiply
    382.86x = 527.45 × 336.15
  4. Step 4: Simplify right side
    382.86x = 177,300.64
  5. Step 5: Solve for x
    x = 177,300.64/382.86
  6. Step 6: Final answer
    x = 463.10

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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.