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Finding the Fourth Proportional to 343.68, 474.32 and 219.34

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Solution

The fourth proportional to 343.68, 474.32 and 219.34 is: 302.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    343.68 : 474.32 = 219.34 : x
  2. Step 2: Convert to fraction form
    343.68/474.32 = 219.34/x
  3. Step 3: Cross multiply
    343.68x = 474.32 × 219.34
  4. Step 4: Simplify right side
    343.68x = 104,038.49
  5. Step 5: Solve for x
    x = 104,038.49/343.68
  6. Step 6: Final answer
    x = 302.72

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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.