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Finding the Fourth Proportional to 1,477.96, 2,217.06 and 382.31

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Solution

The fourth proportional to 1,477.96, 2,217.06 and 382.31 is: 573.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,477.96 : 2,217.06 = 382.31 : x
  2. Step 2: Convert to fraction form
    1,477.96/2,217.06 = 382.31/x
  3. Step 3: Cross multiply
    1,477.96x = 2,217.06 × 382.31
  4. Step 4: Simplify right side
    1,477.96x = 847,604.21
  5. Step 5: Solve for x
    x = 847,604.21/1,477.96
  6. Step 6: Final answer
    x = 573.50

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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.