Home / 1,243.32-1,865.62-474.36

Finding the Fourth Proportional to 1,243.32, 1,865.62 and 474.36

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Solution

The fourth proportional to 1,243.32, 1,865.62 and 474.36 is: 711.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,243.32 : 1,865.62 = 474.36 : x
  2. Step 2: Convert to fraction form
    1,243.32/1,865.62 = 474.36/x
  3. Step 3: Cross multiply
    1,243.32x = 1,865.62 × 474.36
  4. Step 4: Simplify right side
    1,243.32x = 884,975.50
  5. Step 5: Solve for x
    x = 884,975.50/1,243.32
  6. Step 6: Final answer
    x = 711.78

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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.