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Finding the Fourth Proportional to 384, 529.62 and 322.44

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Solution

The fourth proportional to 384, 529.62 and 322.44 is: 444.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    384 : 529.62 = 322.44 : x
  2. Step 2: Convert to fraction form
    384/529.62 = 322.44/x
  3. Step 3: Cross multiply
    384x = 529.62 × 322.44
  4. Step 4: Simplify right side
    384x = 170,770.67
  5. Step 5: Solve for x
    x = 170,770.67/384
  6. Step 6: Final answer
    x = 444.72

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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.