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Finding the Fourth Proportional to 1,777.67, 2,666.80 and 544.79

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Solution

The fourth proportional to 1,777.67, 2,666.80 and 544.79 is: 817.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,777.67 : 2,666.80 = 544.79 : x
  2. Step 2: Convert to fraction form
    1,777.67/2,666.80 = 544.79/x
  3. Step 3: Cross multiply
    1,777.67x = 2,666.80 × 544.79
  4. Step 4: Simplify right side
    1,777.67x = 1,452,845.97
  5. Step 5: Solve for x
    x = 1,452,845.97/1,777.67
  6. Step 6: Final answer
    x = 817.28

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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.