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Finding the Fourth Proportional to 1,377.74, 2,062.94 and 829.17

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Solution

The fourth proportional to 1,377.74, 2,062.94 and 829.17 is: 1,241.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,377.74 : 2,062.94 = 829.17 : x
  2. Step 2: Convert to fraction form
    1,377.74/2,062.94 = 829.17/x
  3. Step 3: Cross multiply
    1,377.74x = 2,062.94 × 829.17
  4. Step 4: Simplify right side
    1,377.74x = 1,710,523.81
  5. Step 5: Solve for x
    x = 1,710,523.81/1,377.74
  6. Step 6: Final answer
    x = 1,241.54

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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.