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Finding the Fourth Proportional to 955.85, 1,319.18 and 582.87

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Solution

The fourth proportional to 955.85, 1,319.18 and 582.87 is: 804.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    955.85 : 1,319.18 = 582.87 : x
  2. Step 2: Convert to fraction form
    955.85/1,319.18 = 582.87/x
  3. Step 3: Cross multiply
    955.85x = 1,319.18 × 582.87
  4. Step 4: Simplify right side
    955.85x = 768,907.53
  5. Step 5: Solve for x
    x = 768,907.53/955.85
  6. Step 6: Final answer
    x = 804.43

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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.