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Finding the Fourth Proportional to 1,339.99, 1,849.18 and 750.49

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Solution

The fourth proportional to 1,339.99, 1,849.18 and 750.49 is: 1,035.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,339.99 : 1,849.18 = 750.49 : x
  2. Step 2: Convert to fraction form
    1,339.99/1,849.18 = 750.49/x
  3. Step 3: Cross multiply
    1,339.99x = 1,849.18 × 750.49
  4. Step 4: Simplify right side
    1,339.99x = 1,387,791.10
  5. Step 5: Solve for x
    x = 1,387,791.10/1,339.99
  6. Step 6: Final answer
    x = 1,035.67

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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.