Home / 1,245.07-1,867.29-514.54

Finding the Fourth Proportional to 1,245.07, 1,867.29 and 514.54

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Solution

The fourth proportional to 1,245.07, 1,867.29 and 514.54 is: 771.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,245.07 : 1,867.29 = 514.54 : x
  2. Step 2: Convert to fraction form
    1,245.07/1,867.29 = 514.54/x
  3. Step 3: Cross multiply
    1,245.07x = 1,867.29 × 514.54
  4. Step 4: Simplify right side
    1,245.07x = 960,795.40
  5. Step 5: Solve for x
    x = 960,795.40/1,245.07
  6. Step 6: Final answer
    x = 771.68

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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.