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Finding the Fourth Proportional to 622.23, 933.42 and 256.97

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Solution

The fourth proportional to 622.23, 933.42 and 256.97 is: 385.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    622.23 : 933.42 = 256.97 : x
  2. Step 2: Convert to fraction form
    622.23/933.42 = 256.97/x
  3. Step 3: Cross multiply
    622.23x = 933.42 × 256.97
  4. Step 4: Simplify right side
    622.23x = 239,864.23
  5. Step 5: Solve for x
    x = 239,864.23/622.23
  6. Step 6: Final answer
    x = 385.49

Related Problems

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Half scale
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Double scale
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Similar ratio
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1.5x scale

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.