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Finding the Fourth Proportional to 548.94, 757.68 and 339.15

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Solution

The fourth proportional to 548.94, 757.68 and 339.15 is: 468.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    548.94 : 757.68 = 339.15 : x
  2. Step 2: Convert to fraction form
    548.94/757.68 = 339.15/x
  3. Step 3: Cross multiply
    548.94x = 757.68 × 339.15
  4. Step 4: Simplify right side
    548.94x = 256,967.17
  5. Step 5: Solve for x
    x = 256,967.17/548.94
  6. Step 6: Final answer
    x = 468.12

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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.