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Finding the Fourth Proportional to 435.05, 600.53 and 287.89

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Solution

The fourth proportional to 435.05, 600.53 and 287.89 is: 397.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    435.05 : 600.53 = 287.89 : x
  2. Step 2: Convert to fraction form
    435.05/600.53 = 287.89/x
  3. Step 3: Cross multiply
    435.05x = 600.53 × 287.89
  4. Step 4: Simplify right side
    435.05x = 172,885.80
  5. Step 5: Solve for x
    x = 172,885.80/435.05
  6. Step 6: Final answer
    x = 397.39

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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.