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Finding the Fourth Proportional to 888.33, 1,225.71 and 538.95

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Solution

The fourth proportional to 888.33, 1,225.71 and 538.95 is: 743.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    888.33 : 1,225.71 = 538.95 : x
  2. Step 2: Convert to fraction form
    888.33/1,225.71 = 538.95/x
  3. Step 3: Cross multiply
    888.33x = 1,225.71 × 538.95
  4. Step 4: Simplify right side
    888.33x = 660,596.40
  5. Step 5: Solve for x
    x = 660,596.40/888.33
  6. Step 6: Final answer
    x = 743.64

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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.