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Finding the Fourth Proportional to 976.38, 1,347.60 and 627.27

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Solution

The fourth proportional to 976.38, 1,347.60 and 627.27 is: 865.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    976.38 : 1,347.60 = 627.27 : x
  2. Step 2: Convert to fraction form
    976.38/1,347.60 = 627.27/x
  3. Step 3: Cross multiply
    976.38x = 1,347.60 × 627.27
  4. Step 4: Simplify right side
    976.38x = 845,309.05
  5. Step 5: Solve for x
    x = 845,309.05/976.38
  6. Step 6: Final answer
    x = 865.76

Related Problems

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Half scale
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Double scale
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1.5x scale

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.