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Finding the Fourth Proportional to 613.53, 920.16 and 180.54

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Solution

The fourth proportional to 613.53, 920.16 and 180.54 is: 270.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    613.53 : 920.16 = 180.54 : x
  2. Step 2: Convert to fraction form
    613.53/920.16 = 180.54/x
  3. Step 3: Cross multiply
    613.53x = 920.16 × 180.54
  4. Step 4: Simplify right side
    613.53x = 166,125.69
  5. Step 5: Solve for x
    x = 166,125.69/613.53
  6. Step 6: Final answer
    x = 270.77

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1.5x scale

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.