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Finding the Fourth Proportional to 318.93, 478.57 and 182.06

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Solution

The fourth proportional to 318.93, 478.57 and 182.06 is: 273.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    318.93 : 478.57 = 182.06 : x
  2. Step 2: Convert to fraction form
    318.93/478.57 = 182.06/x
  3. Step 3: Cross multiply
    318.93x = 478.57 × 182.06
  4. Step 4: Simplify right side
    318.93x = 87,128.45
  5. Step 5: Solve for x
    x = 87,128.45/318.93
  6. Step 6: Final answer
    x = 273.19

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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.