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Finding the Fourth Proportional to 1,119.62, 1,679.56 and 888.50

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Solution

The fourth proportional to 1,119.62, 1,679.56 and 888.50 is: 1,332.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,119.62 : 1,679.56 = 888.50 : x
  2. Step 2: Convert to fraction form
    1,119.62/1,679.56 = 888.50/x
  3. Step 3: Cross multiply
    1,119.62x = 1,679.56 × 888.50
  4. Step 4: Simplify right side
    1,119.62x = 1,492,289.06
  5. Step 5: Solve for x
    x = 1,492,289.06/1,119.62
  6. Step 6: Final answer
    x = 1,332.85

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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.