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Finding the Fourth Proportional to 645.42, 968.28 and 234.67

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Solution

The fourth proportional to 645.42, 968.28 and 234.67 is: 352.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    645.42 : 968.28 = 234.67 : x
  2. Step 2: Convert to fraction form
    645.42/968.28 = 234.67/x
  3. Step 3: Cross multiply
    645.42x = 968.28 × 234.67
  4. Step 4: Simplify right side
    645.42x = 227,228.17
  5. Step 5: Solve for x
    x = 227,228.17/645.42
  6. Step 6: Final answer
    x = 352.06

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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.