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Finding the Fourth Proportional to 479.05, 718.53 and 154.40

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Solution

The fourth proportional to 479.05, 718.53 and 154.40 is: 231.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    479.05 : 718.53 = 154.40 : x
  2. Step 2: Convert to fraction form
    479.05/718.53 = 154.40/x
  3. Step 3: Cross multiply
    479.05x = 718.53 × 154.40
  4. Step 4: Simplify right side
    479.05x = 110,941.03
  5. Step 5: Solve for x
    x = 110,941.03/479.05
  6. Step 6: Final answer
    x = 231.59

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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.