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Finding the Fourth Proportional to 1,270.13, 1,904.00 and 806.49

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Solution

The fourth proportional to 1,270.13, 1,904.00 and 806.49 is: 1,208.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,270.13 : 1,904.00 = 806.49 : x
  2. Step 2: Convert to fraction form
    1,270.13/1,904.00 = 806.49/x
  3. Step 3: Cross multiply
    1,270.13x = 1,904.00 × 806.49
  4. Step 4: Simplify right side
    1,270.13x = 1,535,552.93
  5. Step 5: Solve for x
    x = 1,535,552.93/1,270.13
  6. Step 6: Final answer
    x = 1,208.98

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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.