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Finding the Fourth Proportional to 850.53, 1,173.31 and 535.65

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Solution

The fourth proportional to 850.53, 1,173.31 and 535.65 is: 738.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    850.53 : 1,173.31 = 535.65 : x
  2. Step 2: Convert to fraction form
    850.53/1,173.31 = 535.65/x
  3. Step 3: Cross multiply
    850.53x = 1,173.31 × 535.65
  4. Step 4: Simplify right side
    850.53x = 628,483.50
  5. Step 5: Solve for x
    x = 628,483.50/850.53
  6. Step 6: Final answer
    x = 738.93

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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.