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Finding the Fourth Proportional to 557.86, 836.54 and 326.81

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Solution

The fourth proportional to 557.86, 836.54 and 326.81 is: 490.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    557.86 : 836.54 = 326.81 : x
  2. Step 2: Convert to fraction form
    557.86/836.54 = 326.81/x
  3. Step 3: Cross multiply
    557.86x = 836.54 × 326.81
  4. Step 4: Simplify right side
    557.86x = 273,388.82
  5. Step 5: Solve for x
    x = 273,388.82/557.86
  6. Step 6: Final answer
    x = 490.06

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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.