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Finding the Fourth Proportional to 960.36, 1,440.50 and 473.25

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Solution

The fourth proportional to 960.36, 1,440.50 and 473.25 is: 709.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    960.36 : 1,440.50 = 473.25 : x
  2. Step 2: Convert to fraction form
    960.36/1,440.50 = 473.25/x
  3. Step 3: Cross multiply
    960.36x = 1,440.50 × 473.25
  4. Step 4: Simplify right side
    960.36x = 681,714.26
  5. Step 5: Solve for x
    x = 681,714.26/960.36
  6. Step 6: Final answer
    x = 709.85

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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.