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Finding the Fourth Proportional to 548.10, 756 and 338.11

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Solution

The fourth proportional to 548.10, 756 and 338.11 is: 466.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    548.10 : 756 = 338.11 : x
  2. Step 2: Convert to fraction form
    548.10/756 = 338.11/x
  3. Step 3: Cross multiply
    548.10x = 756 × 338.11
  4. Step 4: Simplify right side
    548.10x = 255,609.27
  5. Step 5: Solve for x
    x = 255,609.27/548.10
  6. Step 6: Final answer
    x = 466.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.