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Finding the Fourth Proportional to 533.50, 797 and 425.40

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Solution

The fourth proportional to 533.50, 797 and 425.40 is: 635.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    533.50 : 797 = 425.40 : x
  2. Step 2: Convert to fraction form
    533.50/797 = 425.40/x
  3. Step 3: Cross multiply
    533.50x = 797 × 425.40
  4. Step 4: Simplify right side
    533.50x = 339,043.80
  5. Step 5: Solve for x
    x = 339,043.80/533.50
  6. Step 6: Final answer
    x = 635.51

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.