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Finding the Fourth Proportional to 387.05, 533.25 and 376.11

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Solution

The fourth proportional to 387.05, 533.25 and 376.11 is: 518.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    387.05 : 533.25 = 376.11 : x
  2. Step 2: Convert to fraction form
    387.05/533.25 = 376.11/x
  3. Step 3: Cross multiply
    387.05x = 533.25 × 376.11
  4. Step 4: Simplify right side
    387.05x = 200,560.66
  5. Step 5: Solve for x
    x = 200,560.66/387.05
  6. Step 6: Final answer
    x = 518.18

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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.