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Finding the Fourth Proportional to 341.44, 471.09 and 291.40

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Solution

The fourth proportional to 341.44, 471.09 and 291.40 is: 402.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    341.44 : 471.09 = 291.40 : x
  2. Step 2: Convert to fraction form
    341.44/471.09 = 291.40/x
  3. Step 3: Cross multiply
    341.44x = 471.09 × 291.40
  4. Step 4: Simplify right side
    341.44x = 137,275.63
  5. Step 5: Solve for x
    x = 137,275.63/341.44
  6. Step 6: Final answer
    x = 402.05

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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.