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Finding the Fourth Proportional to 345.11, 475.57 and 246.70

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Solution

The fourth proportional to 345.11, 475.57 and 246.70 is: 339.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    345.11 : 475.57 = 246.70 : x
  2. Step 2: Convert to fraction form
    345.11/475.57 = 246.70/x
  3. Step 3: Cross multiply
    345.11x = 475.57 × 246.70
  4. Step 4: Simplify right side
    345.11x = 117,321.35
  5. Step 5: Solve for x
    x = 117,321.35/345.11
  6. Step 6: Final answer
    x = 339.95

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.