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Finding the Fourth Proportional to 645.34, 967.68 and 234.38

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Solution

The fourth proportional to 645.34, 967.68 and 234.38 is: 351.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    645.34 : 967.68 = 234.38 : x
  2. Step 2: Convert to fraction form
    645.34/967.68 = 234.38/x
  3. Step 3: Cross multiply
    645.34x = 967.68 × 234.38
  4. Step 4: Simplify right side
    645.34x = 226,804.84
  5. Step 5: Solve for x
    x = 226,804.84/645.34
  6. Step 6: Final answer
    x = 351.45

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1.5x scale

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.