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Finding the Fourth Proportional to 435, 652.84 and 261.86

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Solution

The fourth proportional to 435, 652.84 and 261.86 is: 392.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    435 : 652.84 = 261.86 : x
  2. Step 2: Convert to fraction form
    435/652.84 = 261.86/x
  3. Step 3: Cross multiply
    435x = 652.84 × 261.86
  4. Step 4: Simplify right side
    435x = 170,952.68
  5. Step 5: Solve for x
    x = 170,952.68/435
  6. Step 6: Final answer
    x = 392.99

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.