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Finding the Fourth Proportional to 955.68, 1,440.69 and 893.04

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Solution

The fourth proportional to 955.68, 1,440.69 and 893.04 is: 1,346.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    955.68 : 1,440.69 = 893.04 : x
  2. Step 2: Convert to fraction form
    955.68/1,440.69 = 893.04/x
  3. Step 3: Cross multiply
    955.68x = 1,440.69 × 893.04
  4. Step 4: Simplify right side
    955.68x = 1,286,593.80
  5. Step 5: Solve for x
    x = 1,286,593.80/955.68
  6. Step 6: Final answer
    x = 1,346.26

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.