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Finding the Fourth Proportional to 341.90, 471.51 and 243.74

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Solution

The fourth proportional to 341.90, 471.51 and 243.74 is: 336.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    341.90 : 471.51 = 243.74 : x
  2. Step 2: Convert to fraction form
    341.90/471.51 = 243.74/x
  3. Step 3: Cross multiply
    341.90x = 471.51 × 243.74
  4. Step 4: Simplify right side
    341.90x = 114,925.85
  5. Step 5: Solve for x
    x = 114,925.85/341.90
  6. Step 6: Final answer
    x = 336.14

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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.