Home / 1,317.75-1,975.27-624.80

Finding the Fourth Proportional to 1,317.75, 1,975.27 and 624.80

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Solution

The fourth proportional to 1,317.75, 1,975.27 and 624.80 is: 936.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,317.75 : 1,975.27 = 624.80 : x
  2. Step 2: Convert to fraction form
    1,317.75/1,975.27 = 624.80/x
  3. Step 3: Cross multiply
    1,317.75x = 1,975.27 × 624.80
  4. Step 4: Simplify right side
    1,317.75x = 1,234,148.70
  5. Step 5: Solve for x
    x = 1,234,148.70/1,317.75
  6. Step 6: Final answer
    x = 936.56

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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.