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Finding the Fourth Proportional to 976.95, 1,463.37 and 667.35

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Solution

The fourth proportional to 976.95, 1,463.37 and 667.35 is: 999.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    976.95 : 1,463.37 = 667.35 : x
  2. Step 2: Convert to fraction form
    976.95/1,463.37 = 667.35/x
  3. Step 3: Cross multiply
    976.95x = 1,463.37 × 667.35
  4. Step 4: Simplify right side
    976.95x = 976,579.97
  5. Step 5: Solve for x
    x = 976,579.97/976.95
  6. Step 6: Final answer
    x = 999.62

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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.