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Finding the Fourth Proportional to 647.13, 970.21 and 333.99

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Solution

The fourth proportional to 647.13, 970.21 and 333.99 is: 500.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    647.13 : 970.21 = 333.99 : x
  2. Step 2: Convert to fraction form
    647.13/970.21 = 333.99/x
  3. Step 3: Cross multiply
    647.13x = 970.21 × 333.99
  4. Step 4: Simplify right side
    647.13x = 324,040.44
  5. Step 5: Solve for x
    x = 324,040.44/647.13
  6. Step 6: Final answer
    x = 500.73

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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.