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Finding the Fourth Proportional to 1,774.69, 2,661.36 and 541.72

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Solution

The fourth proportional to 1,774.69, 2,661.36 and 541.72 is: 812.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,774.69 : 2,661.36 = 541.72 : x
  2. Step 2: Convert to fraction form
    1,774.69/2,661.36 = 541.72/x
  3. Step 3: Cross multiply
    1,774.69x = 2,661.36 × 541.72
  4. Step 4: Simplify right side
    1,774.69x = 1,441,711.94
  5. Step 5: Solve for x
    x = 1,441,711.94/1,774.69
  6. Step 6: Final answer
    x = 812.37

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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.