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Finding the Fourth Proportional to 382.84, 527.24 and 381.64

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Solution

The fourth proportional to 382.84, 527.24 and 381.64 is: 525.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    382.84 : 527.24 = 381.64 : x
  2. Step 2: Convert to fraction form
    382.84/527.24 = 381.64/x
  3. Step 3: Cross multiply
    382.84x = 527.24 × 381.64
  4. Step 4: Simplify right side
    382.84x = 201,215.87
  5. Step 5: Solve for x
    x = 201,215.87/382.84
  6. Step 6: Final answer
    x = 525.59

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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.