Home / 1,148.58-1,721.43-498.56

Finding the Fourth Proportional to 1,148.58, 1,721.43 and 498.56

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Solution

The fourth proportional to 1,148.58, 1,721.43 and 498.56 is: 747.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,148.58 : 1,721.43 = 498.56 : x
  2. Step 2: Convert to fraction form
    1,148.58/1,721.43 = 498.56/x
  3. Step 3: Cross multiply
    1,148.58x = 1,721.43 × 498.56
  4. Step 4: Simplify right side
    1,148.58x = 858,227.53
  5. Step 5: Solve for x
    x = 858,227.53/1,148.58
  6. Step 6: Final answer
    x = 747.21

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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.