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Finding the Fourth Proportional to 960.72, 1,325.96 and 567.76

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Solution

The fourth proportional to 960.72, 1,325.96 and 567.76 is: 783.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    960.72 : 1,325.96 = 567.76 : x
  2. Step 2: Convert to fraction form
    960.72/1,325.96 = 567.76/x
  3. Step 3: Cross multiply
    960.72x = 1,325.96 × 567.76
  4. Step 4: Simplify right side
    960.72x = 752,827.05
  5. Step 5: Solve for x
    x = 752,827.05/960.72
  6. Step 6: Final answer
    x = 783.61

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.