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Finding the Fourth Proportional to 888.12, 1,225.66 and 495.18

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Solution

The fourth proportional to 888.12, 1,225.66 and 495.18 is: 683.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    888.12 : 1,225.66 = 495.18 : x
  2. Step 2: Convert to fraction form
    888.12/1,225.66 = 495.18/x
  3. Step 3: Cross multiply
    888.12x = 1,225.66 × 495.18
  4. Step 4: Simplify right side
    888.12x = 606,922.32
  5. Step 5: Solve for x
    x = 606,922.32/888.12
  6. Step 6: Final answer
    x = 683.38

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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.