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Finding the Fourth Proportional to 897.79, 1,238.88 and 504.73

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Solution

The fourth proportional to 897.79, 1,238.88 and 504.73 is: 696.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    897.79 : 1,238.88 = 504.73 : x
  2. Step 2: Convert to fraction form
    897.79/1,238.88 = 504.73/x
  3. Step 3: Cross multiply
    897.79x = 1,238.88 × 504.73
  4. Step 4: Simplify right side
    897.79x = 625,299.90
  5. Step 5: Solve for x
    x = 625,299.90/897.79
  6. Step 6: Final answer
    x = 696.49

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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.