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Finding the Fourth Proportional to 479.64, 718.30 and 273.58

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Solution

The fourth proportional to 479.64, 718.30 and 273.58 is: 409.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    479.64 : 718.30 = 273.58 : x
  2. Step 2: Convert to fraction form
    479.64/718.30 = 273.58/x
  3. Step 3: Cross multiply
    479.64x = 718.30 × 273.58
  4. Step 4: Simplify right side
    479.64x = 196,512.51
  5. Step 5: Solve for x
    x = 196,512.51/479.64
  6. Step 6: Final answer
    x = 409.71

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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.