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Finding the Fourth Proportional to 341.89, 471.60 and 215.65

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Solution

The fourth proportional to 341.89, 471.60 and 215.65 is: 297.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    341.89 : 471.60 = 215.65 : x
  2. Step 2: Convert to fraction form
    341.89/471.60 = 215.65/x
  3. Step 3: Cross multiply
    341.89x = 471.60 × 215.65
  4. Step 4: Simplify right side
    341.89x = 101,700.54
  5. Step 5: Solve for x
    x = 101,700.54/341.89
  6. Step 6: Final answer
    x = 297.47

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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.