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Finding the Fourth Proportional to 511.56, 766.29 and 480.51

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Solution

The fourth proportional to 511.56, 766.29 and 480.51 is: 719.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    511.56 : 766.29 = 480.51 : x
  2. Step 2: Convert to fraction form
    511.56/766.29 = 480.51/x
  3. Step 3: Cross multiply
    511.56x = 766.29 × 480.51
  4. Step 4: Simplify right side
    511.56x = 368,210.01
  5. Step 5: Solve for x
    x = 368,210.01/511.56
  6. Step 6: Final answer
    x = 719.78

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.