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Finding the Fourth Proportional to 603.98, 833.31 and 394.16

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Solution

The fourth proportional to 603.98, 833.31 and 394.16 is: 543.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    603.98 : 833.31 = 394.16 : x
  2. Step 2: Convert to fraction form
    603.98/833.31 = 394.16/x
  3. Step 3: Cross multiply
    603.98x = 833.31 × 394.16
  4. Step 4: Simplify right side
    603.98x = 328,457.47
  5. Step 5: Solve for x
    x = 328,457.47/603.98
  6. Step 6: Final answer
    x = 543.82

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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.