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Finding the Fourth Proportional to 761.27, 1,050.50 and 481.46

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Solution

The fourth proportional to 761.27, 1,050.50 and 481.46 is: 664.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    761.27 : 1,050.50 = 481.46 : x
  2. Step 2: Convert to fraction form
    761.27/1,050.50 = 481.46/x
  3. Step 3: Cross multiply
    761.27x = 1,050.50 × 481.46
  4. Step 4: Simplify right side
    761.27x = 505,769.68
  5. Step 5: Solve for x
    x = 505,769.68/761.27
  6. Step 6: Final answer
    x = 664.38

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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.