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Finding the Fourth Proportional to 551.01, 826.52 and 185.80

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Solution

The fourth proportional to 551.01, 826.52 and 185.80 is: 278.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    551.01 : 826.52 = 185.80 : x
  2. Step 2: Convert to fraction form
    551.01/826.52 = 185.80/x
  3. Step 3: Cross multiply
    551.01x = 826.52 × 185.80
  4. Step 4: Simplify right side
    551.01x = 153,567.87
  5. Step 5: Solve for x
    x = 153,567.87/551.01
  6. Step 6: Final answer
    x = 278.70

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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.