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Finding the Fourth Proportional to 1,942.74, 2,911.52 and 708.99

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Solution

The fourth proportional to 1,942.74, 2,911.52 and 708.99 is: 1,062.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,942.74 : 2,911.52 = 708.99 : x
  2. Step 2: Convert to fraction form
    1,942.74/2,911.52 = 708.99/x
  3. Step 3: Cross multiply
    1,942.74x = 2,911.52 × 708.99
  4. Step 4: Simplify right side
    1,942.74x = 2,064,235.02
  5. Step 5: Solve for x
    x = 2,064,235.02/1,942.74
  6. Step 6: Final answer
    x = 1,062.54

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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.