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Finding the Fourth Proportional to 933.23, 1,399.17 and 385.22

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Solution

The fourth proportional to 933.23, 1,399.17 and 385.22 is: 577.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    933.23 : 1,399.17 = 385.22 : x
  2. Step 2: Convert to fraction form
    933.23/1,399.17 = 385.22/x
  3. Step 3: Cross multiply
    933.23x = 1,399.17 × 385.22
  4. Step 4: Simplify right side
    933.23x = 538,988.27
  5. Step 5: Solve for x
    x = 538,988.27/933.23
  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.