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Finding the Fourth Proportional to 535.69, 739.19 and 314.56

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Solution

The fourth proportional to 535.69, 739.19 and 314.56 is: 434.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    535.69 : 739.19 = 314.56 : x
  2. Step 2: Convert to fraction form
    535.69/739.19 = 314.56/x
  3. Step 3: Cross multiply
    535.69x = 739.19 × 314.56
  4. Step 4: Simplify right side
    535.69x = 232,514.34
  5. Step 5: Solve for x
    x = 232,514.34/535.69
  6. Step 6: Final answer
    x = 434.05

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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.