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Finding the Fourth Proportional to 1,347.99, 1,860.21 and 758.49

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Solution

The fourth proportional to 1,347.99, 1,860.21 and 758.49 is: 1,046.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,347.99 : 1,860.21 = 758.49 : x
  2. Step 2: Convert to fraction form
    1,347.99/1,860.21 = 758.49/x
  3. Step 3: Cross multiply
    1,347.99x = 1,860.21 × 758.49
  4. Step 4: Simplify right side
    1,347.99x = 1,410,950.68
  5. Step 5: Solve for x
    x = 1,410,950.68/1,347.99
  6. Step 6: Final answer
    x = 1,046.71

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.