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Finding the Fourth Proportional to 578.96, 867.19 and 384.05

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Solution

The fourth proportional to 578.96, 867.19 and 384.05 is: 575.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    578.96 : 867.19 = 384.05 : x
  2. Step 2: Convert to fraction form
    578.96/867.19 = 384.05/x
  3. Step 3: Cross multiply
    578.96x = 867.19 × 384.05
  4. Step 4: Simplify right side
    578.96x = 333,043.81
  5. Step 5: Solve for x
    x = 333,043.81/578.96
  6. Step 6: Final answer
    x = 575.25

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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.