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Finding the Fourth Proportional to 318.94, 479.12 and 197.03

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Solution

The fourth proportional to 318.94, 479.12 and 197.03 is: 295.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    318.94 : 479.12 = 197.03 : x
  2. Step 2: Convert to fraction form
    318.94/479.12 = 197.03/x
  3. Step 3: Cross multiply
    318.94x = 479.12 × 197.03
  4. Step 4: Simplify right side
    318.94x = 94,401.23
  5. Step 5: Solve for x
    x = 94,401.23/318.94
  6. Step 6: Final answer
    x = 295.99

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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.