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Finding the Fourth Proportional to 451.54, 679.95 and 394.46

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Solution

The fourth proportional to 451.54, 679.95 and 394.46 is: 594.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    451.54 : 679.95 = 394.46 : x
  2. Step 2: Convert to fraction form
    451.54/679.95 = 394.46/x
  3. Step 3: Cross multiply
    451.54x = 679.95 × 394.46
  4. Step 4: Simplify right side
    451.54x = 268,213.08
  5. Step 5: Solve for x
    x = 268,213.08/451.54
  6. Step 6: Final answer
    x = 594.00

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.