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Finding the Fourth Proportional to 536.49, 801.45 and 518.31

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Solution

The fourth proportional to 536.49, 801.45 and 518.31 is: 774.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    536.49 : 801.45 = 518.31 : x
  2. Step 2: Convert to fraction form
    536.49/801.45 = 518.31/x
  3. Step 3: Cross multiply
    536.49x = 801.45 × 518.31
  4. Step 4: Simplify right side
    536.49x = 415,399.55
  5. Step 5: Solve for x
    x = 415,399.55/536.49
  6. Step 6: Final answer
    x = 774.29

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.