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Finding the Fourth Proportional to 976.00, 1,346.26 and 681.16

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Solution

The fourth proportional to 976.00, 1,346.26 and 681.16 is: 939.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    976.00 : 1,346.26 = 681.16 : x
  2. Step 2: Convert to fraction form
    976.00/1,346.26 = 681.16/x
  3. Step 3: Cross multiply
    976.00x = 1,346.26 × 681.16
  4. Step 4: Simplify right side
    976.00x = 917,008.32
  5. Step 5: Solve for x
    x = 917,008.32/976.00
  6. Step 6: Final answer
    x = 939.56

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.