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Finding the Fourth Proportional to 995.23, 1,373.06 and 684.19

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Solution

The fourth proportional to 995.23, 1,373.06 and 684.19 is: 943.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    995.23 : 1,373.06 = 684.19 : x
  2. Step 2: Convert to fraction form
    995.23/1,373.06 = 684.19/x
  3. Step 3: Cross multiply
    995.23x = 1,373.06 × 684.19
  4. Step 4: Simplify right side
    995.23x = 939,429.63
  5. Step 5: Solve for x
    x = 939,429.63/995.23
  6. Step 6: Final answer
    x = 943.93

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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.