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Finding the Fourth Proportional to 453.22, 625.40 and 266.70

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Solution

The fourth proportional to 453.22, 625.40 and 266.70 is: 368.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    453.22 : 625.40 = 266.70 : x
  2. Step 2: Convert to fraction form
    453.22/625.40 = 266.70/x
  3. Step 3: Cross multiply
    453.22x = 625.40 × 266.70
  4. Step 4: Simplify right side
    453.22x = 166,794.18
  5. Step 5: Solve for x
    x = 166,794.18/453.22
  6. Step 6: Final answer
    x = 368.02

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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.