Home / 1,126.45-1,689.68-304.73

Finding the Fourth Proportional to 1,126.45, 1,689.68 and 304.73

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Solution

The fourth proportional to 1,126.45, 1,689.68 and 304.73 is: 457.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,126.45 : 1,689.68 = 304.73 : x
  2. Step 2: Convert to fraction form
    1,126.45/1,689.68 = 304.73/x
  3. Step 3: Cross multiply
    1,126.45x = 1,689.68 × 304.73
  4. Step 4: Simplify right side
    1,126.45x = 514,896.19
  5. Step 5: Solve for x
    x = 514,896.19/1,126.45
  6. Step 6: Final answer
    x = 457.10

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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.