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Finding the Fourth Proportional to 1,851.13, 2,777.19 and 552.61

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Solution

The fourth proportional to 1,851.13, 2,777.19 and 552.61 is: 829.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,851.13 : 2,777.19 = 552.61 : x
  2. Step 2: Convert to fraction form
    1,851.13/2,777.19 = 552.61/x
  3. Step 3: Cross multiply
    1,851.13x = 2,777.19 × 552.61
  4. Step 4: Simplify right side
    1,851.13x = 1,534,702.97
  5. Step 5: Solve for x
    x = 1,534,702.97/1,851.13
  6. Step 6: Final answer
    x = 829.06

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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.