Home / 1,292.30-1,939.37-471.27

Finding the Fourth Proportional to 1,292.30, 1,939.37 and 471.27

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Solution

The fourth proportional to 1,292.30, 1,939.37 and 471.27 is: 707.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,292.30 : 1,939.37 = 471.27 : x
  2. Step 2: Convert to fraction form
    1,292.30/1,939.37 = 471.27/x
  3. Step 3: Cross multiply
    1,292.30x = 1,939.37 × 471.27
  4. Step 4: Simplify right side
    1,292.30x = 913,964.54
  5. Step 5: Solve for x
    x = 913,964.54/1,292.30
  6. Step 6: Final answer
    x = 707.24

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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.