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Finding the Fourth Proportional to 995.11, 1,373.24 and 553.00

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Solution

The fourth proportional to 995.11, 1,373.24 and 553.00 is: 763.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    995.11 : 1,373.24 = 553.00 : x
  2. Step 2: Convert to fraction form
    995.11/1,373.24 = 553.00/x
  3. Step 3: Cross multiply
    995.11x = 1,373.24 × 553.00
  4. Step 4: Simplify right side
    995.11x = 759,392.09
  5. Step 5: Solve for x
    x = 759,392.09/995.11
  6. Step 6: Final answer
    x = 763.13

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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.