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Finding the Fourth Proportional to 380.06, 524.74 and 286.98

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Solution

The fourth proportional to 380.06, 524.74 and 286.98 is: 396.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    380.06 : 524.74 = 286.98 : x
  2. Step 2: Convert to fraction form
    380.06/524.74 = 286.98/x
  3. Step 3: Cross multiply
    380.06x = 524.74 × 286.98
  4. Step 4: Simplify right side
    380.06x = 150,589.89
  5. Step 5: Solve for x
    x = 150,589.89/380.06
  6. Step 6: Final answer
    x = 396.23

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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.