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Finding the Fourth Proportional to 578.82, 867.87 and 290.25

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Solution

The fourth proportional to 578.82, 867.87 and 290.25 is: 435.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    578.82 : 867.87 = 290.25 : x
  2. Step 2: Convert to fraction form
    578.82/867.87 = 290.25/x
  3. Step 3: Cross multiply
    578.82x = 867.87 × 290.25
  4. Step 4: Simplify right side
    578.82x = 251,899.27
  5. Step 5: Solve for x
    x = 251,899.27/578.82
  6. Step 6: Final answer
    x = 435.19

Related Problems

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Half scale
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Double scale
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Similar ratio
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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.