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Finding the Fourth Proportional to 888.94, 1,330.07 and 842.06

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Solution

The fourth proportional to 888.94, 1,330.07 and 842.06 is: 1,259.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    888.94 : 1,330.07 = 842.06 : x
  2. Step 2: Convert to fraction form
    888.94/1,330.07 = 842.06/x
  3. Step 3: Cross multiply
    888.94x = 1,330.07 × 842.06
  4. Step 4: Simplify right side
    888.94x = 1,120,002.60
  5. Step 5: Solve for x
    x = 1,120,002.60/888.94
  6. Step 6: Final answer
    x = 1,259.93

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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.