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Finding the Fourth Proportional to 1,418.89, 1,959.05 and 888.01

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Solution

The fourth proportional to 1,418.89, 1,959.05 and 888.01 is: 1,226.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,418.89 : 1,959.05 = 888.01 : x
  2. Step 2: Convert to fraction form
    1,418.89/1,959.05 = 888.01/x
  3. Step 3: Cross multiply
    1,418.89x = 1,959.05 × 888.01
  4. Step 4: Simplify right side
    1,418.89x = 1,739,655.99
  5. Step 5: Solve for x
    x = 1,739,655.99/1,418.89
  6. Step 6: Final answer
    x = 1,226.07

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.