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Finding the Fourth Proportional to 603.78, 833.20 and 341.79

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Solution

The fourth proportional to 603.78, 833.20 and 341.79 is: 471.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    603.78 : 833.20 = 341.79 : x
  2. Step 2: Convert to fraction form
    603.78/833.20 = 341.79/x
  3. Step 3: Cross multiply
    603.78x = 833.20 × 341.79
  4. Step 4: Simplify right side
    603.78x = 284,779.43
  5. Step 5: Solve for x
    x = 284,779.43/603.78
  6. Step 6: Final answer
    x = 471.66

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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.