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Finding the Fourth Proportional to 435.31, 599.39 and 400.48

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Solution

The fourth proportional to 435.31, 599.39 and 400.48 is: 551.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    435.31 : 599.39 = 400.48 : x
  2. Step 2: Convert to fraction form
    435.31/599.39 = 400.48/x
  3. Step 3: Cross multiply
    435.31x = 599.39 × 400.48
  4. Step 4: Simplify right side
    435.31x = 240,040.71
  5. Step 5: Solve for x
    x = 240,040.71/435.31
  6. Step 6: Final answer
    x = 551.43

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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.