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Finding the Fourth Proportional to 964.85, 1,445.34 and 444.13

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Solution

The fourth proportional to 964.85, 1,445.34 and 444.13 is: 665.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    964.85 : 1,445.34 = 444.13 : x
  2. Step 2: Convert to fraction form
    964.85/1,445.34 = 444.13/x
  3. Step 3: Cross multiply
    964.85x = 1,445.34 × 444.13
  4. Step 4: Simplify right side
    964.85x = 641,920.66
  5. Step 5: Solve for x
    x = 641,920.66/964.85
  6. Step 6: Final answer
    x = 665.30

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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.