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Finding the Fourth Proportional to 450.50, 621.64 and 253.97

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Solution

The fourth proportional to 450.50, 621.64 and 253.97 is: 350.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    450.50 : 621.64 = 253.97 : x
  2. Step 2: Convert to fraction form
    450.50/621.64 = 253.97/x
  3. Step 3: Cross multiply
    450.50x = 621.64 × 253.97
  4. Step 4: Simplify right side
    450.50x = 157,877.45
  5. Step 5: Solve for x
    x = 157,877.45/450.50
  6. Step 6: Final answer
    x = 350.45

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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.