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Finding the Fourth Proportional to 955.68, 1,317.96 and 734.64

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Solution

The fourth proportional to 955.68, 1,317.96 and 734.64 is: 1,013.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    955.68 : 1,317.96 = 734.64 : x
  2. Step 2: Convert to fraction form
    955.68/1,317.96 = 734.64/x
  3. Step 3: Cross multiply
    955.68x = 1,317.96 × 734.64
  4. Step 4: Simplify right side
    955.68x = 968,226.13
  5. Step 5: Solve for x
    x = 968,226.13/955.68
  6. Step 6: Final answer
    x = 1,013.13

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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.