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Finding the Fourth Proportional to 1,197.36, 1,794.95 and 427.68

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Solution

The fourth proportional to 1,197.36, 1,794.95 and 427.68 is: 641.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,197.36 : 1,794.95 = 427.68 : x
  2. Step 2: Convert to fraction form
    1,197.36/1,794.95 = 427.68/x
  3. Step 3: Cross multiply
    1,197.36x = 1,794.95 × 427.68
  4. Step 4: Simplify right side
    1,197.36x = 767,662.08
  5. Step 5: Solve for x
    x = 767,662.08/1,197.36
  6. Step 6: Final answer
    x = 641.13

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1.5x scale

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.