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Finding the Fourth Proportional to 965.84, 1,332.18 and 933.69

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Solution

The fourth proportional to 965.84, 1,332.18 and 933.69 is: 1,287.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    965.84 : 1,332.18 = 933.69 : x
  2. Step 2: Convert to fraction form
    965.84/1,332.18 = 933.69/x
  3. Step 3: Cross multiply
    965.84x = 1,332.18 × 933.69
  4. Step 4: Simplify right side
    965.84x = 1,243,843.14
  5. Step 5: Solve for x
    x = 1,243,843.14/965.84
  6. Step 6: Final answer
    x = 1,287.84

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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.