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Finding the Fourth Proportional to 535.75, 739.09 and 314.60

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Solution

The fourth proportional to 535.75, 739.09 and 314.60 is: 434.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    535.75 : 739.09 = 314.60 : x
  2. Step 2: Convert to fraction form
    535.75/739.09 = 314.60/x
  3. Step 3: Cross multiply
    535.75x = 739.09 × 314.60
  4. Step 4: Simplify right side
    535.75x = 232,517.71
  5. Step 5: Solve for x
    x = 232,517.71/535.75
  6. Step 6: Final answer
    x = 434.00

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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.