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Finding the Fourth Proportional to 960.90, 1,325.37 and 567.60

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Solution

The fourth proportional to 960.90, 1,325.37 and 567.60 is: 782.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    960.90 : 1,325.37 = 567.60 : x
  2. Step 2: Convert to fraction form
    960.90/1,325.37 = 567.60/x
  3. Step 3: Cross multiply
    960.90x = 1,325.37 × 567.60
  4. Step 4: Simplify right side
    960.90x = 752,280.01
  5. Step 5: Solve for x
    x = 752,280.01/960.90
  6. Step 6: Final answer
    x = 782.89

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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.