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Finding the Fourth Proportional to 536.22, 739.31 and 457.38

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Solution

The fourth proportional to 536.22, 739.31 and 457.38 is: 630.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    536.22 : 739.31 = 457.38 : x
  2. Step 2: Convert to fraction form
    536.22/739.31 = 457.38/x
  3. Step 3: Cross multiply
    536.22x = 739.31 × 457.38
  4. Step 4: Simplify right side
    536.22x = 338,143.32
  5. Step 5: Solve for x
    x = 338,143.32/536.22
  6. Step 6: Final answer
    x = 630.61

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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.