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Finding the Fourth Proportional to 1,302.70, 1,953.74 and 481.07

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Solution

The fourth proportional to 1,302.70, 1,953.74 and 481.07 is: 721.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,302.70 : 1,953.74 = 481.07 : x
  2. Step 2: Convert to fraction form
    1,302.70/1,953.74 = 481.07/x
  3. Step 3: Cross multiply
    1,302.70x = 1,953.74 × 481.07
  4. Step 4: Simplify right side
    1,302.70x = 939,883.30
  5. Step 5: Solve for x
    x = 939,883.30/1,302.70
  6. Step 6: Final answer
    x = 721.49

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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.