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Finding the Fourth Proportional to 888.36, 1,225.62 and 538.92

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Solution

The fourth proportional to 888.36, 1,225.62 and 538.92 is: 743.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    888.36 : 1,225.62 = 538.92 : x
  2. Step 2: Convert to fraction form
    888.36/1,225.62 = 538.92/x
  3. Step 3: Cross multiply
    888.36x = 1,225.62 × 538.92
  4. Step 4: Simplify right side
    888.36x = 660,511.13
  5. Step 5: Solve for x
    x = 660,511.13/888.36
  6. Step 6: Final answer
    x = 743.52

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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.