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Finding the Fourth Proportional to 581.72, 872.62 and 273.64

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Solution

The fourth proportional to 581.72, 872.62 and 273.64 is: 410.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    581.72 : 872.62 = 273.64 : x
  2. Step 2: Convert to fraction form
    581.72/872.62 = 273.64/x
  3. Step 3: Cross multiply
    581.72x = 872.62 × 273.64
  4. Step 4: Simplify right side
    581.72x = 238,783.74
  5. Step 5: Solve for x
    x = 238,783.74/581.72
  6. Step 6: Final answer
    x = 410.48

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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.