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Finding the Fourth Proportional to 628.88, 944.22 and 384.66

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Solution

The fourth proportional to 628.88, 944.22 and 384.66 is: 577.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    628.88 : 944.22 = 384.66 : x
  2. Step 2: Convert to fraction form
    628.88/944.22 = 384.66/x
  3. Step 3: Cross multiply
    628.88x = 944.22 × 384.66
  4. Step 4: Simplify right side
    628.88x = 363,203.67
  5. Step 5: Solve for x
    x = 363,203.67/628.88
  6. Step 6: Final answer
    x = 577.55

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.