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Finding the Fourth Proportional to 955.96, 1,426.13 and 910.60

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Solution

The fourth proportional to 955.96, 1,426.13 and 910.60 is: 1,358.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    955.96 : 1,426.13 = 910.60 : x
  2. Step 2: Convert to fraction form
    955.96/1,426.13 = 910.60/x
  3. Step 3: Cross multiply
    955.96x = 1,426.13 × 910.60
  4. Step 4: Simplify right side
    955.96x = 1,298,633.98
  5. Step 5: Solve for x
    x = 1,298,633.98/955.96
  6. Step 6: Final answer
    x = 1,358.46

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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.