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Finding the Fourth Proportional to 622.56, 933.84 and 256.95

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Solution

The fourth proportional to 622.56, 933.84 and 256.95 is: 385.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    622.56 : 933.84 = 256.95 : x
  2. Step 2: Convert to fraction form
    622.56/933.84 = 256.95/x
  3. Step 3: Cross multiply
    622.56x = 933.84 × 256.95
  4. Step 4: Simplify right side
    622.56x = 239,950.19
  5. Step 5: Solve for x
    x = 239,950.19/622.56
  6. Step 6: Final answer
    x = 385.43

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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.