Home / 743.03-1,112.24-548.25

Finding the Fourth Proportional to 743.03, 1,112.24 and 548.25

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Solution

The fourth proportional to 743.03, 1,112.24 and 548.25 is: 820.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    743.03 : 1,112.24 = 548.25 : x
  2. Step 2: Convert to fraction form
    743.03/1,112.24 = 548.25/x
  3. Step 3: Cross multiply
    743.03x = 1,112.24 × 548.25
  4. Step 4: Simplify right side
    743.03x = 609,783.99
  5. Step 5: Solve for x
    x = 609,783.99/743.03
  6. Step 6: Final answer
    x = 820.67

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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.