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Finding the Fourth Proportional to 536.13, 739.89 and 339.69

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Solution

The fourth proportional to 536.13, 739.89 and 339.69 is: 468.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    536.13 : 739.89 = 339.69 : x
  2. Step 2: Convert to fraction form
    536.13/739.89 = 339.69/x
  3. Step 3: Cross multiply
    536.13x = 739.89 × 339.69
  4. Step 4: Simplify right side
    536.13x = 251,333.23
  5. Step 5: Solve for x
    x = 251,333.23/536.13
  6. Step 6: Final answer
    x = 468.79

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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.