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Finding the Fourth Proportional to 613.32, 919.86 and 300.66

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Solution

The fourth proportional to 613.32, 919.86 and 300.66 is: 450.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    613.32 : 919.86 = 300.66 : x
  2. Step 2: Convert to fraction form
    613.32/919.86 = 300.66/x
  3. Step 3: Cross multiply
    613.32x = 919.86 × 300.66
  4. Step 4: Simplify right side
    613.32x = 276,565.11
  5. Step 5: Solve for x
    x = 276,565.11/613.32
  6. Step 6: Final answer
    x = 450.93

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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.