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Finding the Fourth Proportional to 343.30, 473.83 and 218.93

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Solution

The fourth proportional to 343.30, 473.83 and 218.93 is: 302.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    343.30 : 473.83 = 218.93 : x
  2. Step 2: Convert to fraction form
    343.30/473.83 = 218.93/x
  3. Step 3: Cross multiply
    343.30x = 473.83 × 218.93
  4. Step 4: Simplify right side
    343.30x = 103,736.32
  5. Step 5: Solve for x
    x = 103,736.32/343.30
  6. Step 6: Final answer
    x = 302.17

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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.