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Finding the Fourth Proportional to 622.13, 933.18 and 485.27

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Solution

The fourth proportional to 622.13, 933.18 and 485.27 is: 727.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    622.13 : 933.18 = 485.27 : x
  2. Step 2: Convert to fraction form
    622.13/933.18 = 485.27/x
  3. Step 3: Cross multiply
    622.13x = 933.18 × 485.27
  4. Step 4: Simplify right side
    622.13x = 452,844.26
  5. Step 5: Solve for x
    x = 452,844.26/622.13
  6. Step 6: Final answer
    x = 727.89

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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.