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Finding the Fourth Proportional to 955.93, 1,317.79 and 675.67

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Solution

The fourth proportional to 955.93, 1,317.79 and 675.67 is: 931.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    955.93 : 1,317.79 = 675.67 : x
  2. Step 2: Convert to fraction form
    955.93/1,317.79 = 675.67/x
  3. Step 3: Cross multiply
    955.93x = 1,317.79 × 675.67
  4. Step 4: Simplify right side
    955.93x = 890,391.97
  5. Step 5: Solve for x
    x = 890,391.97/955.93
  6. Step 6: Final answer
    x = 931.44

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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.