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Finding the Fourth Proportional to 356.50, 492.88 and 341.20

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Solution

The fourth proportional to 356.50, 492.88 and 341.20 is: 471.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    356.50 : 492.88 = 341.20 : x
  2. Step 2: Convert to fraction form
    356.50/492.88 = 341.20/x
  3. Step 3: Cross multiply
    356.50x = 492.88 × 341.20
  4. Step 4: Simplify right side
    356.50x = 168,170.66
  5. Step 5: Solve for x
    x = 168,170.66/356.50
  6. Step 6: Final answer
    x = 471.73

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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.