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Finding the Fourth Proportional to 1,191.49, 1,786.97 and 325.69

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Solution

The fourth proportional to 1,191.49, 1,786.97 and 325.69 is: 488.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,191.49 : 1,786.97 = 325.69 : x
  2. Step 2: Convert to fraction form
    1,191.49/1,786.97 = 325.69/x
  3. Step 3: Cross multiply
    1,191.49x = 1,786.97 × 325.69
  4. Step 4: Simplify right side
    1,191.49x = 581,996.63
  5. Step 5: Solve for x
    x = 581,996.63/1,191.49
  6. Step 6: Final answer
    x = 488.46

Related Problems

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Half scale
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Double scale
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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.