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Finding the Fourth Proportional to 995.33, 1,493.01 and 345.61

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Solution

The fourth proportional to 995.33, 1,493.01 and 345.61 is: 518.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    995.33 : 1,493.01 = 345.61 : x
  2. Step 2: Convert to fraction form
    995.33/1,493.01 = 345.61/x
  3. Step 3: Cross multiply
    995.33x = 1,493.01 × 345.61
  4. Step 4: Simplify right side
    995.33x = 515,999.76
  5. Step 5: Solve for x
    x = 515,999.76/995.33
  6. Step 6: Final answer
    x = 518.42

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1.5x scale

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.