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Finding the Fourth Proportional to 483.95, 667.88 and 274.15

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Solution

The fourth proportional to 483.95, 667.88 and 274.15 is: 378.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    483.95 : 667.88 = 274.15 : x
  2. Step 2: Convert to fraction form
    483.95/667.88 = 274.15/x
  3. Step 3: Cross multiply
    483.95x = 667.88 × 274.15
  4. Step 4: Simplify right side
    483.95x = 183,096.04
  5. Step 5: Solve for x
    x = 183,096.04/483.95
  6. Step 6: Final answer
    x = 378.34

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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.