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Finding the Fourth Proportional to 381.10, 524.76 and 298.12

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Solution

The fourth proportional to 381.10, 524.76 and 298.12 is: 410.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    381.10 : 524.76 = 298.12 : x
  2. Step 2: Convert to fraction form
    381.10/524.76 = 298.12/x
  3. Step 3: Cross multiply
    381.10x = 524.76 × 298.12
  4. Step 4: Simplify right side
    381.10x = 156,441.45
  5. Step 5: Solve for x
    x = 156,441.45/381.10
  6. Step 6: Final answer
    x = 410.50

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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.