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Finding the Fourth Proportional to 622.84, 933.99 and 257.38

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Solution

The fourth proportional to 622.84, 933.99 and 257.38 is: 385.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    622.84 : 933.99 = 257.38 : x
  2. Step 2: Convert to fraction form
    622.84/933.99 = 257.38/x
  3. Step 3: Cross multiply
    622.84x = 933.99 × 257.38
  4. Step 4: Simplify right side
    622.84x = 240,390.35
  5. Step 5: Solve for x
    x = 240,390.35/622.84
  6. Step 6: Final answer
    x = 385.96

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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.