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Finding the Fourth Proportional to 976.02, 1,464.09 and 326.70

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Solution

The fourth proportional to 976.02, 1,464.09 and 326.70 is: 490.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    976.02 : 1,464.09 = 326.70 : x
  2. Step 2: Convert to fraction form
    976.02/1,464.09 = 326.70/x
  3. Step 3: Cross multiply
    976.02x = 1,464.09 × 326.70
  4. Step 4: Simplify right side
    976.02x = 478,318.20
  5. Step 5: Solve for x
    x = 478,318.20/976.02
  6. Step 6: Final answer
    x = 490.07

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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.