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Finding the Fourth Proportional to 722.93, 1,084.41 and 375.80

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Solution

The fourth proportional to 722.93, 1,084.41 and 375.80 is: 563.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    722.93 : 1,084.41 = 375.80 : x
  2. Step 2: Convert to fraction form
    722.93/1,084.41 = 375.80/x
  3. Step 3: Cross multiply
    722.93x = 1,084.41 × 375.80
  4. Step 4: Simplify right side
    722.93x = 407,515.86
  5. Step 5: Solve for x
    x = 407,515.86/722.93
  6. Step 6: Final answer
    x = 563.70

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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.