Home / 1,148.45-1,584.86-624.48

Finding the Fourth Proportional to 1,148.45, 1,584.86 and 624.48

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Solution

The fourth proportional to 1,148.45, 1,584.86 and 624.48 is: 861.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,148.45 : 1,584.86 = 624.48 : x
  2. Step 2: Convert to fraction form
    1,148.45/1,584.86 = 624.48/x
  3. Step 3: Cross multiply
    1,148.45x = 1,584.86 × 624.48
  4. Step 4: Simplify right side
    1,148.45x = 989,719.44
  5. Step 5: Solve for x
    x = 989,719.44/1,148.45
  6. Step 6: Final answer
    x = 861.78

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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.