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Finding the Fourth Proportional to 531.46, 796.90 and 206.50

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Solution

The fourth proportional to 531.46, 796.90 and 206.50 is: 309.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    531.46 : 796.90 = 206.50 : x
  2. Step 2: Convert to fraction form
    531.46/796.90 = 206.50/x
  3. Step 3: Cross multiply
    531.46x = 796.90 × 206.50
  4. Step 4: Simplify right side
    531.46x = 164,559.85
  5. Step 5: Solve for x
    x = 164,559.85/531.46
  6. Step 6: Final answer
    x = 309.64

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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.