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Finding the Fourth Proportional to 955.74, 1,433.67 and 379.02

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Solution

The fourth proportional to 955.74, 1,433.67 and 379.02 is: 568.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    955.74 : 1,433.67 = 379.02 : x
  2. Step 2: Convert to fraction form
    955.74/1,433.67 = 379.02/x
  3. Step 3: Cross multiply
    955.74x = 1,433.67 × 379.02
  4. Step 4: Simplify right side
    955.74x = 543,389.60
  5. Step 5: Solve for x
    x = 543,389.60/955.74
  6. Step 6: Final answer
    x = 568.55

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.