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Finding the Fourth Proportional to 394.03, 543.52 and 283.33

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Solution

The fourth proportional to 394.03, 543.52 and 283.33 is: 390.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    394.03 : 543.52 = 283.33 : x
  2. Step 2: Convert to fraction form
    394.03/543.52 = 283.33/x
  3. Step 3: Cross multiply
    394.03x = 543.52 × 283.33
  4. Step 4: Simplify right side
    394.03x = 153,994.10
  5. Step 5: Solve for x
    x = 153,994.10/394.03
  6. Step 6: Final answer
    x = 390.82

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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.