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Finding the Fourth Proportional to 340.85, 470.30 and 247.82

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Solution

The fourth proportional to 340.85, 470.30 and 247.82 is: 341.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    340.85 : 470.30 = 247.82 : x
  2. Step 2: Convert to fraction form
    340.85/470.30 = 247.82/x
  3. Step 3: Cross multiply
    340.85x = 470.30 × 247.82
  4. Step 4: Simplify right side
    340.85x = 116,546.16
  5. Step 5: Solve for x
    x = 116,546.16/340.85
  6. Step 6: Final answer
    x = 341.93

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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.