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Finding the Fourth Proportional to 536.28, 739.92 and 315.08

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Solution

The fourth proportional to 536.28, 739.92 and 315.08 is: 434.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    536.28 : 739.92 = 315.08 : x
  2. Step 2: Convert to fraction form
    536.28/739.92 = 315.08/x
  3. Step 3: Cross multiply
    536.28x = 739.92 × 315.08
  4. Step 4: Simplify right side
    536.28x = 233,133.99
  5. Step 5: Solve for x
    x = 233,133.99/536.28
  6. Step 6: Final answer
    x = 434.72

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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.