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Finding the Fourth Proportional to 665.51, 995.90 and 583.02

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Solution

The fourth proportional to 665.51, 995.90 and 583.02 is: 872.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    665.51 : 995.90 = 583.02 : x
  2. Step 2: Convert to fraction form
    665.51/995.90 = 583.02/x
  3. Step 3: Cross multiply
    665.51x = 995.90 × 583.02
  4. Step 4: Simplify right side
    665.51x = 580,626.70
  5. Step 5: Solve for x
    x = 580,626.70/665.51
  6. Step 6: Final answer
    x = 872.46

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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.