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Finding the Fourth Proportional to 960.71, 1,440.37 and 473.64

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Solution

The fourth proportional to 960.71, 1,440.37 and 473.64 is: 710.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    960.71 : 1,440.37 = 473.64 : x
  2. Step 2: Convert to fraction form
    960.71/1,440.37 = 473.64/x
  3. Step 3: Cross multiply
    960.71x = 1,440.37 × 473.64
  4. Step 4: Simplify right side
    960.71x = 682,216.85
  5. Step 5: Solve for x
    x = 682,216.85/960.71
  6. Step 6: Final answer
    x = 710.12

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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.