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Finding the Fourth Proportional to 550.92, 760.23 and 314.81

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Solution

The fourth proportional to 550.92, 760.23 and 314.81 is: 434.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    550.92 : 760.23 = 314.81 : x
  2. Step 2: Convert to fraction form
    550.92/760.23 = 314.81/x
  3. Step 3: Cross multiply
    550.92x = 760.23 × 314.81
  4. Step 4: Simplify right side
    550.92x = 239,324.21
  5. Step 5: Solve for x
    x = 239,324.21/550.92
  6. Step 6: Final answer
    x = 434.41

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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.