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Finding the Fourth Proportional to 535.50, 739.19 and 314.45

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Solution

The fourth proportional to 535.50, 739.19 and 314.45 is: 434.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    535.50 : 739.19 = 314.45 : x
  2. Step 2: Convert to fraction form
    535.50/739.19 = 314.45/x
  3. Step 3: Cross multiply
    535.50x = 739.19 × 314.45
  4. Step 4: Simplify right side
    535.50x = 232,438.30
  5. Step 5: Solve for x
    x = 232,438.30/535.50
  6. Step 6: Final answer
    x = 434.06

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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.