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Finding the Fourth Proportional to 995.07, 1,493.48 and 719.85

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Solution

The fourth proportional to 995.07, 1,493.48 and 719.85 is: 1,080.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    995.07 : 1,493.48 = 719.85 : x
  2. Step 2: Convert to fraction form
    995.07/1,493.48 = 719.85/x
  3. Step 3: Cross multiply
    995.07x = 1,493.48 × 719.85
  4. Step 4: Simplify right side
    995.07x = 1,075,081.58
  5. Step 5: Solve for x
    x = 1,075,081.58/995.07
  6. Step 6: Final answer
    x = 1,080.41

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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.