Home / 1,148.81-1,723.89-418.43

Finding the Fourth Proportional to 1,148.81, 1,723.89 and 418.43

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Solution

The fourth proportional to 1,148.81, 1,723.89 and 418.43 is: 627.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,148.81 : 1,723.89 = 418.43 : x
  2. Step 2: Convert to fraction form
    1,148.81/1,723.89 = 418.43/x
  3. Step 3: Cross multiply
    1,148.81x = 1,723.89 × 418.43
  4. Step 4: Simplify right side
    1,148.81x = 721,327.29
  5. Step 5: Solve for x
    x = 721,327.29/1,148.81
  6. Step 6: Final answer
    x = 627.89

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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.