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Finding the Fourth Proportional to 1,001.09, 1,374.16 and 888.10

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Solution

The fourth proportional to 1,001.09, 1,374.16 and 888.10 is: 1,219.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,001.09 : 1,374.16 = 888.10 : x
  2. Step 2: Convert to fraction form
    1,001.09/1,374.16 = 888.10/x
  3. Step 3: Cross multiply
    1,001.09x = 1,374.16 × 888.10
  4. Step 4: Simplify right side
    1,001.09x = 1,220,380.18
  5. Step 5: Solve for x
    x = 1,220,380.18/1,001.09
  6. Step 6: Final answer
    x = 1,219.05

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.