Home / 1,049.40-1,566.78-945.72

Finding the Fourth Proportional to 1,049.40, 1,566.78 and 945.72

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Solution

The fourth proportional to 1,049.40, 1,566.78 and 945.72 is: 1,411.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,049.40 : 1,566.78 = 945.72 : x
  2. Step 2: Convert to fraction form
    1,049.40/1,566.78 = 945.72/x
  3. Step 3: Cross multiply
    1,049.40x = 1,566.78 × 945.72
  4. Step 4: Simplify right side
    1,049.40x = 1,481,735.18
  5. Step 5: Solve for x
    x = 1,481,735.18/1,049.40
  6. Step 6: Final answer
    x = 1,411.98

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.