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Finding the Fourth Proportional to 535.80, 739.44 and 302.96

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Solution

The fourth proportional to 535.80, 739.44 and 302.96 is: 418.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    535.80 : 739.44 = 302.96 : x
  2. Step 2: Convert to fraction form
    535.80/739.44 = 302.96/x
  3. Step 3: Cross multiply
    535.80x = 739.44 × 302.96
  4. Step 4: Simplify right side
    535.80x = 224,020.74
  5. Step 5: Solve for x
    x = 224,020.74/535.80
  6. Step 6: Final answer
    x = 418.11

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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.