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Finding the Fourth Proportional to 623.64, 935.46 and 276.90

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Solution

The fourth proportional to 623.64, 935.46 and 276.90 is: 415.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    623.64 : 935.46 = 276.90 : x
  2. Step 2: Convert to fraction form
    623.64/935.46 = 276.90/x
  3. Step 3: Cross multiply
    623.64x = 935.46 × 276.90
  4. Step 4: Simplify right side
    623.64x = 259,028.87
  5. Step 5: Solve for x
    x = 259,028.87/623.64
  6. Step 6: Final answer
    x = 415.35

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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.