Home / 1,508.49-2,263.35-687.15

Finding the Fourth Proportional to 1,508.49, 2,263.35 and 687.15

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Solution

The fourth proportional to 1,508.49, 2,263.35 and 687.15 is: 1,031.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,508.49 : 2,263.35 = 687.15 : x
  2. Step 2: Convert to fraction form
    1,508.49/2,263.35 = 687.15/x
  3. Step 3: Cross multiply
    1,508.49x = 2,263.35 × 687.15
  4. Step 4: Simplify right side
    1,508.49x = 1,555,260.95
  5. Step 5: Solve for x
    x = 1,555,260.95/1,508.49
  6. Step 6: Final answer
    x = 1,031.01

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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.