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Finding the Fourth Proportional to 412.13, 616.85 and 273.35

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Solution

The fourth proportional to 412.13, 616.85 and 273.35 is: 409.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    412.13 : 616.85 = 273.35 : x
  2. Step 2: Convert to fraction form
    412.13/616.85 = 273.35/x
  3. Step 3: Cross multiply
    412.13x = 616.85 × 273.35
  4. Step 4: Simplify right side
    412.13x = 168,611.50
  5. Step 5: Solve for x
    x = 168,611.50/412.13
  6. Step 6: Final answer
    x = 409.13

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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.