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Finding the Fourth Proportional to 383.94, 528.26 and 328.46

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Solution

The fourth proportional to 383.94, 528.26 and 328.46 is: 451.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    383.94 : 528.26 = 328.46 : x
  2. Step 2: Convert to fraction form
    383.94/528.26 = 328.46/x
  3. Step 3: Cross multiply
    383.94x = 528.26 × 328.46
  4. Step 4: Simplify right side
    383.94x = 173,508.00
  5. Step 5: Solve for x
    x = 173,508.00/383.94
  6. Step 6: Final answer
    x = 451.91

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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.