Home / 1,245.09-1,867.63-367.60

Finding the Fourth Proportional to 1,245.09, 1,867.63 and 367.60

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Solution

The fourth proportional to 1,245.09, 1,867.63 and 367.60 is: 551.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,245.09 : 1,867.63 = 367.60 : x
  2. Step 2: Convert to fraction form
    1,245.09/1,867.63 = 367.60/x
  3. Step 3: Cross multiply
    1,245.09x = 1,867.63 × 367.60
  4. Step 4: Simplify right side
    1,245.09x = 686,540.79
  5. Step 5: Solve for x
    x = 686,540.79/1,245.09
  6. Step 6: Final answer
    x = 551.40

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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.