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Finding the Fourth Proportional to 1,455.37, 2,179.36 and 960.28

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Solution

The fourth proportional to 1,455.37, 2,179.36 and 960.28 is: 1,437.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,455.37 : 2,179.36 = 960.28 : x
  2. Step 2: Convert to fraction form
    1,455.37/2,179.36 = 960.28/x
  3. Step 3: Cross multiply
    1,455.37x = 2,179.36 × 960.28
  4. Step 4: Simplify right side
    1,455.37x = 2,092,783.11
  5. Step 5: Solve for x
    x = 2,092,783.11/1,455.37
  6. Step 6: Final answer
    x = 1,437.97

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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.