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Finding the Fourth Proportional to 1,337.28, 1,845.64 and 965.48

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Solution

The fourth proportional to 1,337.28, 1,845.64 and 965.48 is: 1,332.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,337.28 : 1,845.64 = 965.48 : x
  2. Step 2: Convert to fraction form
    1,337.28/1,845.64 = 965.48/x
  3. Step 3: Cross multiply
    1,337.28x = 1,845.64 × 965.48
  4. Step 4: Simplify right side
    1,337.28x = 1,781,928.51
  5. Step 5: Solve for x
    x = 1,781,928.51/1,337.28
  6. Step 6: Final answer
    x = 1,332.50

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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.