Home / 1,126.34-1,689.50-304.61

Finding the Fourth Proportional to 1,126.34, 1,689.50 and 304.61

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Solution

The fourth proportional to 1,126.34, 1,689.50 and 304.61 is: 456.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,126.34 : 1,689.50 = 304.61 : x
  2. Step 2: Convert to fraction form
    1,126.34/1,689.50 = 304.61/x
  3. Step 3: Cross multiply
    1,126.34x = 1,689.50 × 304.61
  4. Step 4: Simplify right side
    1,126.34x = 514,640.41
  5. Step 5: Solve for x
    x = 514,640.41/1,126.34
  6. Step 6: Final answer
    x = 456.91

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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.