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Finding the Fourth Proportional to 479.31, 719.07 and 154.65

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Solution

The fourth proportional to 479.31, 719.07 and 154.65 is: 232.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    479.31 : 719.07 = 154.65 : x
  2. Step 2: Convert to fraction form
    479.31/719.07 = 154.65/x
  3. Step 3: Cross multiply
    479.31x = 719.07 × 154.65
  4. Step 4: Simplify right side
    479.31x = 111,204.18
  5. Step 5: Solve for x
    x = 111,204.18/479.31
  6. Step 6: Final answer
    x = 232.01

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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.