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Finding the Fourth Proportional to 845.54, 1,270.69 and 499.03

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Solution

The fourth proportional to 845.54, 1,270.69 and 499.03 is: 749.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    845.54 : 1,270.69 = 499.03 : x
  2. Step 2: Convert to fraction form
    845.54/1,270.69 = 499.03/x
  3. Step 3: Cross multiply
    845.54x = 1,270.69 × 499.03
  4. Step 4: Simplify right side
    845.54x = 634,108.01
  5. Step 5: Solve for x
    x = 634,108.01/845.54
  6. Step 6: Final answer
    x = 749.95

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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.