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Finding the Fourth Proportional to 435.26, 600.66 and 287.90

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Solution

The fourth proportional to 435.26, 600.66 and 287.90 is: 397.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    435.26 : 600.66 = 287.90 : x
  2. Step 2: Convert to fraction form
    435.26/600.66 = 287.90/x
  3. Step 3: Cross multiply
    435.26x = 600.66 × 287.90
  4. Step 4: Simplify right side
    435.26x = 172,930.01
  5. Step 5: Solve for x
    x = 172,930.01/435.26
  6. Step 6: Final answer
    x = 397.30

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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.