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Finding the Fourth Proportional to 2,010.80, 3,015.84 and 549.60

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Solution

The fourth proportional to 2,010.80, 3,015.84 and 549.60 is: 824.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,010.80 : 3,015.84 = 549.60 : x
  2. Step 2: Convert to fraction form
    2,010.80/3,015.84 = 549.60/x
  3. Step 3: Cross multiply
    2,010.80x = 3,015.84 × 549.60
  4. Step 4: Simplify right side
    2,010.80x = 1,657,505.66
  5. Step 5: Solve for x
    x = 1,657,505.66/2,010.80
  6. Step 6: Final answer
    x = 824.30

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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.