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Finding the Fourth Proportional to 474.88, 711.70 and 269.54

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Solution

The fourth proportional to 474.88, 711.70 and 269.54 is: 403.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    474.88 : 711.70 = 269.54 : x
  2. Step 2: Convert to fraction form
    474.88/711.70 = 269.54/x
  3. Step 3: Cross multiply
    474.88x = 711.70 × 269.54
  4. Step 4: Simplify right side
    474.88x = 191,831.62
  5. Step 5: Solve for x
    x = 191,831.62/474.88
  6. Step 6: Final answer
    x = 403.96

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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.