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Finding the Fourth Proportional to 343.11, 473.47 and 187.86

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Solution

The fourth proportional to 343.11, 473.47 and 187.86 is: 259.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    343.11 : 473.47 = 187.86 : x
  2. Step 2: Convert to fraction form
    343.11/473.47 = 187.86/x
  3. Step 3: Cross multiply
    343.11x = 473.47 × 187.86
  4. Step 4: Simplify right side
    343.11x = 88,946.07
  5. Step 5: Solve for x
    x = 88,946.07/343.11
  6. Step 6: Final answer
    x = 259.23

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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.