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Finding the Fourth Proportional to 673.98, 1,010.96 and 186.99

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Solution

The fourth proportional to 673.98, 1,010.96 and 186.99 is: 280.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    673.98 : 1,010.96 = 186.99 : x
  2. Step 2: Convert to fraction form
    673.98/1,010.96 = 186.99/x
  3. Step 3: Cross multiply
    673.98x = 1,010.96 × 186.99
  4. Step 4: Simplify right side
    673.98x = 189,039.41
  5. Step 5: Solve for x
    x = 189,039.41/673.98
  6. Step 6: Final answer
    x = 280.48

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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.