Home / 1,148.05-1,584.31-624.09

Finding the Fourth Proportional to 1,148.05, 1,584.31 and 624.09

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Solution

The fourth proportional to 1,148.05, 1,584.31 and 624.09 is: 861.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,148.05 : 1,584.31 = 624.09 : x
  2. Step 2: Convert to fraction form
    1,148.05/1,584.31 = 624.09/x
  3. Step 3: Cross multiply
    1,148.05x = 1,584.31 × 624.09
  4. Step 4: Simplify right side
    1,148.05x = 988,752.03
  5. Step 5: Solve for x
    x = 988,752.03/1,148.05
  6. Step 6: Final answer
    x = 861.24

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.