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Finding the Fourth Proportional to 434.73, 599.59 and 287.31

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Solution

The fourth proportional to 434.73, 599.59 and 287.31 is: 396.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    434.73 : 599.59 = 287.31 : x
  2. Step 2: Convert to fraction form
    434.73/599.59 = 287.31/x
  3. Step 3: Cross multiply
    434.73x = 599.59 × 287.31
  4. Step 4: Simplify right side
    434.73x = 172,268.20
  5. Step 5: Solve for x
    x = 172,268.20/434.73
  6. Step 6: Final answer
    x = 396.26

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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.