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Finding the Fourth Proportional to 943.95, 1,302.93 and 612.41

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Solution

The fourth proportional to 943.95, 1,302.93 and 612.41 is: 845.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    943.95 : 1,302.93 = 612.41 : x
  2. Step 2: Convert to fraction form
    943.95/1,302.93 = 612.41/x
  3. Step 3: Cross multiply
    943.95x = 1,302.93 × 612.41
  4. Step 4: Simplify right side
    943.95x = 797,920.85
  5. Step 5: Solve for x
    x = 797,920.85/943.95
  6. Step 6: Final answer
    x = 845.30

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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.