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Finding the Fourth Proportional to 387, 533.82 and 262.68

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Solution

The fourth proportional to 387, 533.82 and 262.68 is: 362.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    387 : 533.82 = 262.68 : x
  2. Step 2: Convert to fraction form
    387/533.82 = 262.68/x
  3. Step 3: Cross multiply
    387x = 533.82 × 262.68
  4. Step 4: Simplify right side
    387x = 140,223.84
  5. Step 5: Solve for x
    x = 140,223.84/387
  6. Step 6: Final answer
    x = 362.34

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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.