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Finding the Fourth Proportional to 955.30, 1,426.03 and 887.78

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Solution

The fourth proportional to 955.30, 1,426.03 and 887.78 is: 1,325.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    955.30 : 1,426.03 = 887.78 : x
  2. Step 2: Convert to fraction form
    955.30/1,426.03 = 887.78/x
  3. Step 3: Cross multiply
    955.30x = 1,426.03 × 887.78
  4. Step 4: Simplify right side
    955.30x = 1,265,996.47
  5. Step 5: Solve for x
    x = 1,265,996.47/955.30
  6. Step 6: Final answer
    x = 1,325.23

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.