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Finding the Fourth Proportional to 828.83, 1,242.74 and 341.28

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Solution

The fourth proportional to 828.83, 1,242.74 and 341.28 is: 511.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    828.83 : 1,242.74 = 341.28 : x
  2. Step 2: Convert to fraction form
    828.83/1,242.74 = 341.28/x
  3. Step 3: Cross multiply
    828.83x = 1,242.74 × 341.28
  4. Step 4: Simplify right side
    828.83x = 424,123.16
  5. Step 5: Solve for x
    x = 424,123.16/828.83
  6. Step 6: Final answer
    x = 511.71

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.