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Finding the Fourth Proportional to 578.51, 867.77 and 249.42

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Solution

The fourth proportional to 578.51, 867.77 and 249.42 is: 374.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    578.51 : 867.77 = 249.42 : x
  2. Step 2: Convert to fraction form
    578.51/867.77 = 249.42/x
  3. Step 3: Cross multiply
    578.51x = 867.77 × 249.42
  4. Step 4: Simplify right side
    578.51x = 216,439.19
  5. Step 5: Solve for x
    x = 216,439.19/578.51
  6. Step 6: Final answer
    x = 374.13

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.