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Finding the Fourth Proportional to 479.16, 718.84 and 154.55

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Solution

The fourth proportional to 479.16, 718.84 and 154.55 is: 231.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    479.16 : 718.84 = 154.55 : x
  2. Step 2: Convert to fraction form
    479.16/718.84 = 154.55/x
  3. Step 3: Cross multiply
    479.16x = 718.84 × 154.55
  4. Step 4: Simplify right side
    479.16x = 111,095.44
  5. Step 5: Solve for x
    x = 111,095.44/479.16
  6. Step 6: Final answer
    x = 231.86

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.