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Finding the Fourth Proportional to 434.60, 599.87 and 287.27

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Solution

The fourth proportional to 434.60, 599.87 and 287.27 is: 396.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    434.60 : 599.87 = 287.27 : x
  2. Step 2: Convert to fraction form
    434.60/599.87 = 287.27/x
  3. Step 3: Cross multiply
    434.60x = 599.87 × 287.27
  4. Step 4: Simplify right side
    434.60x = 172,320.22
  5. Step 5: Solve for x
    x = 172,320.22/434.60
  6. Step 6: Final answer
    x = 396.51

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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.