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Finding the Fourth Proportional to 545.00, 817.49 and 481.21

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Solution

The fourth proportional to 545.00, 817.49 and 481.21 is: 721.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    545.00 : 817.49 = 481.21 : x
  2. Step 2: Convert to fraction form
    545.00/817.49 = 481.21/x
  3. Step 3: Cross multiply
    545.00x = 817.49 × 481.21
  4. Step 4: Simplify right side
    545.00x = 393,383.52
  5. Step 5: Solve for x
    x = 393,383.52/545.00
  6. Step 6: Final answer
    x = 721.81

Related Problems

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Half scale
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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.