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Finding the Fourth Proportional to 315.06, 472.28 and 199.14

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Solution

The fourth proportional to 315.06, 472.28 and 199.14 is: 298.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    315.06 : 472.28 = 199.14 : x
  2. Step 2: Convert to fraction form
    315.06/472.28 = 199.14/x
  3. Step 3: Cross multiply
    315.06x = 472.28 × 199.14
  4. Step 4: Simplify right side
    315.06x = 94,049.84
  5. Step 5: Solve for x
    x = 94,049.84/315.06
  6. Step 6: Final answer
    x = 298.51

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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.