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Finding the Fourth Proportional to 386.52, 533.64 and 268.62

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Solution

The fourth proportional to 386.52, 533.64 and 268.62 is: 370.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    386.52 : 533.64 = 268.62 : x
  2. Step 2: Convert to fraction form
    386.52/533.64 = 268.62/x
  3. Step 3: Cross multiply
    386.52x = 533.64 × 268.62
  4. Step 4: Simplify right side
    386.52x = 143,346.38
  5. Step 5: Solve for x
    x = 143,346.38/386.52
  6. Step 6: Final answer
    x = 370.86

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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.