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Finding the Fourth Proportional to 533.48, 799.61 and 316.40

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Solution

The fourth proportional to 533.48, 799.61 and 316.40 is: 474.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    533.48 : 799.61 = 316.40 : x
  2. Step 2: Convert to fraction form
    533.48/799.61 = 316.40/x
  3. Step 3: Cross multiply
    533.48x = 799.61 × 316.40
  4. Step 4: Simplify right side
    533.48x = 252,991.02
  5. Step 5: Solve for x
    x = 252,991.02/533.48
  6. Step 6: Final answer
    x = 474.23

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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.