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Finding the Fourth Proportional to 479.59, 719.32 and 171.38

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Solution

The fourth proportional to 479.59, 719.32 and 171.38 is: 257.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    479.59 : 719.32 = 171.38 : x
  2. Step 2: Convert to fraction form
    479.59/719.32 = 171.38/x
  3. Step 3: Cross multiply
    479.59x = 719.32 × 171.38
  4. Step 4: Simplify right side
    479.59x = 123,277.06
  5. Step 5: Solve for x
    x = 123,277.06/479.59
  6. Step 6: Final answer
    x = 257.05

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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.