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Finding the Fourth Proportional to 645.02, 967.80 and 356.12

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Solution

The fourth proportional to 645.02, 967.80 and 356.12 is: 534.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    645.02 : 967.80 = 356.12 : x
  2. Step 2: Convert to fraction form
    645.02/967.80 = 356.12/x
  3. Step 3: Cross multiply
    645.02x = 967.80 × 356.12
  4. Step 4: Simplify right side
    645.02x = 344,652.94
  5. Step 5: Solve for x
    x = 344,652.94/645.02
  6. Step 6: Final answer
    x = 534.33

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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.