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Finding the Fourth Proportional to 677.55, 935.01 and 382.80

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Solution

The fourth proportional to 677.55, 935.01 and 382.80 is: 528.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    677.55 : 935.01 = 382.80 : x
  2. Step 2: Convert to fraction form
    677.55/935.01 = 382.80/x
  3. Step 3: Cross multiply
    677.55x = 935.01 × 382.80
  4. Step 4: Simplify right side
    677.55x = 357,921.83
  5. Step 5: Solve for x
    x = 357,921.83/677.55
  6. Step 6: Final answer
    x = 528.26

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.