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Finding the Fourth Proportional to 959.64, 1,322.46 and 683.16

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Solution

The fourth proportional to 959.64, 1,322.46 and 683.16 is: 941.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    959.64 : 1,322.46 = 683.16 : x
  2. Step 2: Convert to fraction form
    959.64/1,322.46 = 683.16/x
  3. Step 3: Cross multiply
    959.64x = 1,322.46 × 683.16
  4. Step 4: Simplify right side
    959.64x = 903,451.77
  5. Step 5: Solve for x
    x = 903,451.77/959.64
  6. Step 6: Final answer
    x = 941.45

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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.