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Finding the Fourth Proportional to 554.54, 831.40 and 229.72

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Solution

The fourth proportional to 554.54, 831.40 and 229.72 is: 344.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    554.54 : 831.40 = 229.72 : x
  2. Step 2: Convert to fraction form
    554.54/831.40 = 229.72/x
  3. Step 3: Cross multiply
    554.54x = 831.40 × 229.72
  4. Step 4: Simplify right side
    554.54x = 190,989.21
  5. Step 5: Solve for x
    x = 190,989.21/554.54
  6. Step 6: Final answer
    x = 344.41

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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.