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Finding the Fourth Proportional to 955.66, 1,319.25 and 676.12

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Solution

The fourth proportional to 955.66, 1,319.25 and 676.12 is: 933.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    955.66 : 1,319.25 = 676.12 : x
  2. Step 2: Convert to fraction form
    955.66/1,319.25 = 676.12/x
  3. Step 3: Cross multiply
    955.66x = 1,319.25 × 676.12
  4. Step 4: Simplify right side
    955.66x = 891,971.31
  5. Step 5: Solve for x
    x = 891,971.31/955.66
  6. Step 6: Final answer
    x = 933.36

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1.5x scale

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.