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Finding the Fourth Proportional to 545.03, 817.34 and 179.72

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Solution

The fourth proportional to 545.03, 817.34 and 179.72 is: 269.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    545.03 : 817.34 = 179.72 : x
  2. Step 2: Convert to fraction form
    545.03/817.34 = 179.72/x
  3. Step 3: Cross multiply
    545.03x = 817.34 × 179.72
  4. Step 4: Simplify right side
    545.03x = 146,891.44
  5. Step 5: Solve for x
    x = 146,891.44/545.03
  6. Step 6: Final answer
    x = 269.51

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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.