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Finding the Fourth Proportional to 960.69, 1,441.38 and 571.02

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Solution

The fourth proportional to 960.69, 1,441.38 and 571.02 is: 856.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    960.69 : 1,441.38 = 571.02 : x
  2. Step 2: Convert to fraction form
    960.69/1,441.38 = 571.02/x
  3. Step 3: Cross multiply
    960.69x = 1,441.38 × 571.02
  4. Step 4: Simplify right side
    960.69x = 823,056.81
  5. Step 5: Solve for x
    x = 823,056.81/960.69
  6. Step 6: Final answer
    x = 856.74

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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.