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Finding the Fourth Proportional to 1,503.80, 2,254.82 and 723.45

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Solution

The fourth proportional to 1,503.80, 2,254.82 and 723.45 is: 1,084.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,503.80 : 2,254.82 = 723.45 : x
  2. Step 2: Convert to fraction form
    1,503.80/2,254.82 = 723.45/x
  3. Step 3: Cross multiply
    1,503.80x = 2,254.82 × 723.45
  4. Step 4: Simplify right side
    1,503.80x = 1,631,245.91
  5. Step 5: Solve for x
    x = 1,631,245.91/1,503.80
  6. Step 6: Final answer
    x = 1,084.75

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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.