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Finding the Fourth Proportional to 1,851, 2,776.59 and 552.48

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Solution

The fourth proportional to 1,851, 2,776.59 and 552.48 is: 828.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,851 : 2,776.59 = 552.48 : x
  2. Step 2: Convert to fraction form
    1,851/2,776.59 = 552.48/x
  3. Step 3: Cross multiply
    1,851x = 2,776.59 × 552.48
  4. Step 4: Simplify right side
    1,851x = 1,534,010.44
  5. Step 5: Solve for x
    x = 1,534,010.44/1,851
  6. Step 6: Final answer
    x = 828.75

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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.