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Finding the Fourth Proportional to 1,549.89, 2,324.63 and 684

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Solution

The fourth proportional to 1,549.89, 2,324.63 and 684 is: 1,025.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,549.89 : 2,324.63 = 684 : x
  2. Step 2: Convert to fraction form
    1,549.89/2,324.63 = 684/x
  3. Step 3: Cross multiply
    1,549.89x = 2,324.63 × 684
  4. Step 4: Simplify right side
    1,549.89x = 1,590,048.63
  5. Step 5: Solve for x
    x = 1,590,048.63/1,549.89
  6. Step 6: Final answer
    x = 1,025.91

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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.