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Finding the Fourth Proportional to 619.99, 930.12 and 273.42

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Solution

The fourth proportional to 619.99, 930.12 and 273.42 is: 410.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    619.99 : 930.12 = 273.42 : x
  2. Step 2: Convert to fraction form
    619.99/930.12 = 273.42/x
  3. Step 3: Cross multiply
    619.99x = 930.12 × 273.42
  4. Step 4: Simplify right side
    619.99x = 254,314.44
  5. Step 5: Solve for x
    x = 254,314.44/619.99
  6. Step 6: Final answer
    x = 410.19

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Double scale
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Similar ratio
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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.