Home / 1,508.40-2,263.06-686.48

Finding the Fourth Proportional to 1,508.40, 2,263.06 and 686.48

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Solution

The fourth proportional to 1,508.40, 2,263.06 and 686.48 is: 1,029.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,508.40 : 2,263.06 = 686.48 : x
  2. Step 2: Convert to fraction form
    1,508.40/2,263.06 = 686.48/x
  3. Step 3: Cross multiply
    1,508.40x = 2,263.06 × 686.48
  4. Step 4: Simplify right side
    1,508.40x = 1,553,545.43
  5. Step 5: Solve for x
    x = 1,553,545.43/1,508.40
  6. Step 6: Final answer
    x = 1,029.93

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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.