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Finding the Fourth Proportional to 551.01, 826.65 and 490.53

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Solution

The fourth proportional to 551.01, 826.65 and 490.53 is: 735.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    551.01 : 826.65 = 490.53 : x
  2. Step 2: Convert to fraction form
    551.01/826.65 = 490.53/x
  3. Step 3: Cross multiply
    551.01x = 826.65 × 490.53
  4. Step 4: Simplify right side
    551.01x = 405,496.62
  5. Step 5: Solve for x
    x = 405,496.62/551.01
  6. Step 6: Final answer
    x = 735.92

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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.