Home / 1,275.50-1,913.34-495.56

Finding the Fourth Proportional to 1,275.50, 1,913.34 and 495.56

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Solution

The fourth proportional to 1,275.50, 1,913.34 and 495.56 is: 743.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,275.50 : 1,913.34 = 495.56 : x
  2. Step 2: Convert to fraction form
    1,275.50/1,913.34 = 495.56/x
  3. Step 3: Cross multiply
    1,275.50x = 1,913.34 × 495.56
  4. Step 4: Simplify right side
    1,275.50x = 948,174.77
  5. Step 5: Solve for x
    x = 948,174.77/1,275.50
  6. Step 6: Final answer
    x = 743.37

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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.