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Finding the Fourth Proportional to 647.06, 969.91 and 441.65

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Solution

The fourth proportional to 647.06, 969.91 and 441.65 is: 662.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    647.06 : 969.91 = 441.65 : x
  2. Step 2: Convert to fraction form
    647.06/969.91 = 441.65/x
  3. Step 3: Cross multiply
    647.06x = 969.91 × 441.65
  4. Step 4: Simplify right side
    647.06x = 428,362.07
  5. Step 5: Solve for x
    x = 428,362.07/647.06
  6. Step 6: Final answer
    x = 662.02

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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.