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Finding the Fourth Proportional to 1,204.53, 1,807.05 and 382.70

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Solution

The fourth proportional to 1,204.53, 1,807.05 and 382.70 is: 574.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,204.53 : 1,807.05 = 382.70 : x
  2. Step 2: Convert to fraction form
    1,204.53/1,807.05 = 382.70/x
  3. Step 3: Cross multiply
    1,204.53x = 1,807.05 × 382.70
  4. Step 4: Simplify right side
    1,204.53x = 691,558.04
  5. Step 5: Solve for x
    x = 691,558.04/1,204.53
  6. Step 6: Final answer
    x = 574.13

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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.