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Finding the Fourth Proportional to 554.82, 831.69 and 349.26

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Solution

The fourth proportional to 554.82, 831.69 and 349.26 is: 523.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    554.82 : 831.69 = 349.26 : x
  2. Step 2: Convert to fraction form
    554.82/831.69 = 349.26/x
  3. Step 3: Cross multiply
    554.82x = 831.69 × 349.26
  4. Step 4: Simplify right side
    554.82x = 290,476.05
  5. Step 5: Solve for x
    x = 290,476.05/554.82
  6. Step 6: Final answer
    x = 523.55

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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.