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Finding the Fourth Proportional to 960.54, 1,437.48 and 785.16

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Solution

The fourth proportional to 960.54, 1,437.48 and 785.16 is: 1,175.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    960.54 : 1,437.48 = 785.16 : x
  2. Step 2: Convert to fraction form
    960.54/1,437.48 = 785.16/x
  3. Step 3: Cross multiply
    960.54x = 1,437.48 × 785.16
  4. Step 4: Simplify right side
    960.54x = 1,128,651.80
  5. Step 5: Solve for x
    x = 1,128,651.80/960.54
  6. Step 6: Final answer
    x = 1,175.02

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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.