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Finding the Fourth Proportional to 547.36, 820.98 and 273.40

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Solution

The fourth proportional to 547.36, 820.98 and 273.40 is: 410.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    547.36 : 820.98 = 273.40 : x
  2. Step 2: Convert to fraction form
    547.36/820.98 = 273.40/x
  3. Step 3: Cross multiply
    547.36x = 820.98 × 273.40
  4. Step 4: Simplify right side
    547.36x = 224,455.93
  5. Step 5: Solve for x
    x = 224,455.93/547.36
  6. Step 6: Final answer
    x = 410.07

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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.