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Finding the Fourth Proportional to 622.76, 933.27 and 485.18

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Solution

The fourth proportional to 622.76, 933.27 and 485.18 is: 727.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    622.76 : 933.27 = 485.18 : x
  2. Step 2: Convert to fraction form
    622.76/933.27 = 485.18/x
  3. Step 3: Cross multiply
    622.76x = 933.27 × 485.18
  4. Step 4: Simplify right side
    622.76x = 452,803.94
  5. Step 5: Solve for x
    x = 452,803.94/622.76
  6. Step 6: Final answer
    x = 727.09

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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.