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Finding the Fourth Proportional to 548.08, 756.12 and 340.72

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Solution

The fourth proportional to 548.08, 756.12 and 340.72 is: 470.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    548.08 : 756.12 = 340.72 : x
  2. Step 2: Convert to fraction form
    548.08/756.12 = 340.72/x
  3. Step 3: Cross multiply
    548.08x = 756.12 × 340.72
  4. Step 4: Simplify right side
    548.08x = 257,625.21
  5. Step 5: Solve for x
    x = 257,625.21/548.08
  6. Step 6: Final answer
    x = 470.05

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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.