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Finding the Fourth Proportional to 450.44, 621.61 and 253.94

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Solution

The fourth proportional to 450.44, 621.61 and 253.94 is: 350.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    450.44 : 621.61 = 253.94 : x
  2. Step 2: Convert to fraction form
    450.44/621.61 = 253.94/x
  3. Step 3: Cross multiply
    450.44x = 621.61 × 253.94
  4. Step 4: Simplify right side
    450.44x = 157,851.64
  5. Step 5: Solve for x
    x = 157,851.64/450.44
  6. Step 6: Final answer
    x = 350.44

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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.