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Finding the Fourth Proportional to 535.65, 739.21 and 296.38

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Solution

The fourth proportional to 535.65, 739.21 and 296.38 is: 409.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    535.65 : 739.21 = 296.38 : x
  2. Step 2: Convert to fraction form
    535.65/739.21 = 296.38/x
  3. Step 3: Cross multiply
    535.65x = 739.21 × 296.38
  4. Step 4: Simplify right side
    535.65x = 219,087.06
  5. Step 5: Solve for x
    x = 219,087.06/535.65
  6. Step 6: Final answer
    x = 409.01

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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.