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Finding the Fourth Proportional to 341.68, 471.28 and 210.76

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Solution

The fourth proportional to 341.68, 471.28 and 210.76 is: 290.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    341.68 : 471.28 = 210.76 : x
  2. Step 2: Convert to fraction form
    341.68/471.28 = 210.76/x
  3. Step 3: Cross multiply
    341.68x = 471.28 × 210.76
  4. Step 4: Simplify right side
    341.68x = 99,326.97
  5. Step 5: Solve for x
    x = 99,326.97/341.68
  6. Step 6: Final answer
    x = 290.70

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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.