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Finding the Fourth Proportional to 343.47, 473.48 and 212.25

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Solution

The fourth proportional to 343.47, 473.48 and 212.25 is: 292.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    343.47 : 473.48 = 212.25 : x
  2. Step 2: Convert to fraction form
    343.47/473.48 = 212.25/x
  3. Step 3: Cross multiply
    343.47x = 473.48 × 212.25
  4. Step 4: Simplify right side
    343.47x = 100,495.07
  5. Step 5: Solve for x
    x = 100,495.07/343.47
  6. Step 6: Final answer
    x = 292.59

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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.