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Finding the Fourth Proportional to 511.01, 766.41 and 145.70

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Solution

The fourth proportional to 511.01, 766.41 and 145.70 is: 218.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    511.01 : 766.41 = 145.70 : x
  2. Step 2: Convert to fraction form
    511.01/766.41 = 145.70/x
  3. Step 3: Cross multiply
    511.01x = 766.41 × 145.70
  4. Step 4: Simplify right side
    511.01x = 111,665.94
  5. Step 5: Solve for x
    x = 111,665.94/511.01
  6. Step 6: Final answer
    x = 218.52

Related Problems

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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.