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Finding the Fourth Proportional to 844.82, 1,165.83 and 490.75

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Solution

The fourth proportional to 844.82, 1,165.83 and 490.75 is: 677.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    844.82 : 1,165.83 = 490.75 : x
  2. Step 2: Convert to fraction form
    844.82/1,165.83 = 490.75/x
  3. Step 3: Cross multiply
    844.82x = 1,165.83 × 490.75
  4. Step 4: Simplify right side
    844.82x = 572,131.07
  5. Step 5: Solve for x
    x = 572,131.07/844.82
  6. Step 6: Final answer
    x = 677.22

Related Problems

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Half scale
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Double scale
Find fourth proportional to 845.82, 1,167.21 and 491.75
Similar ratio
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1.5x scale

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.