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Finding the Fourth Proportional to 955.85, 1,318.14 and 675.59

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Solution

The fourth proportional to 955.85, 1,318.14 and 675.59 is: 931.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    955.85 : 1,318.14 = 675.59 : x
  2. Step 2: Convert to fraction form
    955.85/1,318.14 = 675.59/x
  3. Step 3: Cross multiply
    955.85x = 1,318.14 × 675.59
  4. Step 4: Simplify right side
    955.85x = 890,515.61
  5. Step 5: Solve for x
    x = 890,515.61/955.85
  6. Step 6: Final answer
    x = 931.65

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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.