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Finding the Fourth Proportional to 533.17, 799.45 and 316.90

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Solution

The fourth proportional to 533.17, 799.45 and 316.90 is: 475.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    533.17 : 799.45 = 316.90 : x
  2. Step 2: Convert to fraction form
    533.17/799.45 = 316.90/x
  3. Step 3: Cross multiply
    533.17x = 799.45 × 316.90
  4. Step 4: Simplify right side
    533.17x = 253,345.71
  5. Step 5: Solve for x
    x = 253,345.71/533.17
  6. Step 6: Final answer
    x = 475.17

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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.