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Finding the Fourth Proportional to 307.94, 425.04 and 191.48

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Solution

The fourth proportional to 307.94, 425.04 and 191.48 is: 264.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    307.94 : 425.04 = 191.48 : x
  2. Step 2: Convert to fraction form
    307.94/425.04 = 191.48/x
  3. Step 3: Cross multiply
    307.94x = 425.04 × 191.48
  4. Step 4: Simplify right side
    307.94x = 81,386.66
  5. Step 5: Solve for x
    x = 81,386.66/307.94
  6. Step 6: Final answer
    x = 264.29

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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.