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Finding the Fourth Proportional to 435.49, 599.78 and 342.09

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Solution

The fourth proportional to 435.49, 599.78 and 342.09 is: 471.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    435.49 : 599.78 = 342.09 : x
  2. Step 2: Convert to fraction form
    435.49/599.78 = 342.09/x
  3. Step 3: Cross multiply
    435.49x = 599.78 × 342.09
  4. Step 4: Simplify right side
    435.49x = 205,179.60
  5. Step 5: Solve for x
    x = 205,179.60/435.49
  6. Step 6: Final answer
    x = 471.15

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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.