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Finding the Fourth Proportional to 554.82, 831.69 and 266.46

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Solution

The fourth proportional to 554.82, 831.69 and 266.46 is: 399.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    554.82 : 831.69 = 266.46 : x
  2. Step 2: Convert to fraction form
    554.82/831.69 = 266.46/x
  3. Step 3: Cross multiply
    554.82x = 831.69 × 266.46
  4. Step 4: Simplify right side
    554.82x = 221,612.12
  5. Step 5: Solve for x
    x = 221,612.12/554.82
  6. Step 6: Final answer
    x = 399.43

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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.