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Finding the Fourth Proportional to 551.88, 827.37 and 491.13

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Solution

The fourth proportional to 551.88, 827.37 and 491.13 is: 736.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    551.88 : 827.37 = 491.13 : x
  2. Step 2: Convert to fraction form
    551.88/827.37 = 491.13/x
  3. Step 3: Cross multiply
    551.88x = 827.37 × 491.13
  4. Step 4: Simplify right side
    551.88x = 406,346.23
  5. Step 5: Solve for x
    x = 406,346.23/551.88
  6. Step 6: Final answer
    x = 736.29

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.