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Finding the Fourth Proportional to 645.68, 968.26 and 234.71

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Solution

The fourth proportional to 645.68, 968.26 and 234.71 is: 351.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    645.68 : 968.26 = 234.71 : x
  2. Step 2: Convert to fraction form
    645.68/968.26 = 234.71/x
  3. Step 3: Cross multiply
    645.68x = 968.26 × 234.71
  4. Step 4: Simplify right side
    645.68x = 227,262.14
  5. Step 5: Solve for x
    x = 227,262.14/645.68
  6. Step 6: Final answer
    x = 351.98

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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.