Home / 1,245.48-1,867.50-515.58

Finding the Fourth Proportional to 1,245.48, 1,867.50 and 515.58

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Solution

The fourth proportional to 1,245.48, 1,867.50 and 515.58 is: 773.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,245.48 : 1,867.50 = 515.58 : x
  2. Step 2: Convert to fraction form
    1,245.48/1,867.50 = 515.58/x
  3. Step 3: Cross multiply
    1,245.48x = 1,867.50 × 515.58
  4. Step 4: Simplify right side
    1,245.48x = 962,845.65
  5. Step 5: Solve for x
    x = 962,845.65/1,245.48
  6. Step 6: Final answer
    x = 773.07

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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.