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Finding the Fourth Proportional to 965.24, 1,320.89 and 945.08

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Solution

The fourth proportional to 965.24, 1,320.89 and 945.08 is: 1,293.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    965.24 : 1,320.89 = 945.08 : x
  2. Step 2: Convert to fraction form
    965.24/1,320.89 = 945.08/x
  3. Step 3: Cross multiply
    965.24x = 1,320.89 × 945.08
  4. Step 4: Simplify right side
    965.24x = 1,248,346.72
  5. Step 5: Solve for x
    x = 1,248,346.72/965.24
  6. Step 6: Final answer
    x = 1,293.30

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.