Home / 1,508.39-2,263.35-686.55

Finding the Fourth Proportional to 1,508.39, 2,263.35 and 686.55

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Solution

The fourth proportional to 1,508.39, 2,263.35 and 686.55 is: 1,030.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,508.39 : 2,263.35 = 686.55 : x
  2. Step 2: Convert to fraction form
    1,508.39/2,263.35 = 686.55/x
  3. Step 3: Cross multiply
    1,508.39x = 2,263.35 × 686.55
  4. Step 4: Simplify right side
    1,508.39x = 1,553,902.94
  5. Step 5: Solve for x
    x = 1,553,902.94/1,508.39
  6. Step 6: Final answer
    x = 1,030.17

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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.