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Finding the Fourth Proportional to 483.59, 667.19 and 287.08

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Solution

The fourth proportional to 483.59, 667.19 and 287.08 is: 396.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    483.59 : 667.19 = 287.08 : x
  2. Step 2: Convert to fraction form
    483.59/667.19 = 287.08/x
  3. Step 3: Cross multiply
    483.59x = 667.19 × 287.08
  4. Step 4: Simplify right side
    483.59x = 191,535.95
  5. Step 5: Solve for x
    x = 191,535.95/483.59
  6. Step 6: Final answer
    x = 396.07

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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.