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Finding the Fourth Proportional to 1,371.41, 2,054.51 and 814.94

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Solution

The fourth proportional to 1,371.41, 2,054.51 and 814.94 is: 1,220.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,371.41 : 2,054.51 = 814.94 : x
  2. Step 2: Convert to fraction form
    1,371.41/2,054.51 = 814.94/x
  3. Step 3: Cross multiply
    1,371.41x = 2,054.51 × 814.94
  4. Step 4: Simplify right side
    1,371.41x = 1,674,302.38
  5. Step 5: Solve for x
    x = 1,674,302.38/1,371.41
  6. Step 6: Final answer
    x = 1,220.86

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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.