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Finding the Fourth Proportional to 1,295.37, 1,943.06 and 321.45

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Solution

The fourth proportional to 1,295.37, 1,943.06 and 321.45 is: 482.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,295.37 : 1,943.06 = 321.45 : x
  2. Step 2: Convert to fraction form
    1,295.37/1,943.06 = 321.45/x
  3. Step 3: Cross multiply
    1,295.37x = 1,943.06 × 321.45
  4. Step 4: Simplify right side
    1,295.37x = 624,595.03
  5. Step 5: Solve for x
    x = 624,595.03/1,295.37
  6. Step 6: Final answer
    x = 482.18

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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.