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Finding the Fourth Proportional to 943.48, 1,302.63 and 722.03

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Solution

The fourth proportional to 943.48, 1,302.63 and 722.03 is: 996.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    943.48 : 1,302.63 = 722.03 : x
  2. Step 2: Convert to fraction form
    943.48/1,302.63 = 722.03/x
  3. Step 3: Cross multiply
    943.48x = 1,302.63 × 722.03
  4. Step 4: Simplify right side
    943.48x = 940,537.94
  5. Step 5: Solve for x
    x = 940,537.94/943.48
  6. Step 6: Final answer
    x = 996.89

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.