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Finding the Fourth Proportional to 340.88, 470.38 and 191.51

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Solution

The fourth proportional to 340.88, 470.38 and 191.51 is: 264.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    340.88 : 470.38 = 191.51 : x
  2. Step 2: Convert to fraction form
    340.88/470.38 = 191.51/x
  3. Step 3: Cross multiply
    340.88x = 470.38 × 191.51
  4. Step 4: Simplify right side
    340.88x = 90,079.64
  5. Step 5: Solve for x
    x = 90,079.64/340.88
  6. Step 6: Final answer
    x = 264.26

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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.