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Finding the Fourth Proportional to 976.17, 1,347.09 and 550.76

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Solution

The fourth proportional to 976.17, 1,347.09 and 550.76 is: 760.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    976.17 : 1,347.09 = 550.76 : x
  2. Step 2: Convert to fraction form
    976.17/1,347.09 = 550.76/x
  3. Step 3: Cross multiply
    976.17x = 1,347.09 × 550.76
  4. Step 4: Simplify right side
    976.17x = 741,916.55
  5. Step 5: Solve for x
    x = 741,916.55/976.17
  6. Step 6: Final answer
    x = 760.03

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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.