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Finding the Fourth Proportional to 479.10, 718.64 and 154.46

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Solution

The fourth proportional to 479.10, 718.64 and 154.46 is: 231.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    479.10 : 718.64 = 154.46 : x
  2. Step 2: Convert to fraction form
    479.10/718.64 = 154.46/x
  3. Step 3: Cross multiply
    479.10x = 718.64 × 154.46
  4. Step 4: Simplify right side
    479.10x = 110,996.77
  5. Step 5: Solve for x
    x = 110,996.77/479.10
  6. Step 6: Final answer
    x = 231.68

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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.