Home / 1,218.50-1,827.94-396.58

Finding the Fourth Proportional to 1,218.50, 1,827.94 and 396.58

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Solution

The fourth proportional to 1,218.50, 1,827.94 and 396.58 is: 594.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,218.50 : 1,827.94 = 396.58 : x
  2. Step 2: Convert to fraction form
    1,218.50/1,827.94 = 396.58/x
  3. Step 3: Cross multiply
    1,218.50x = 1,827.94 × 396.58
  4. Step 4: Simplify right side
    1,218.50x = 724,922.16
  5. Step 5: Solve for x
    x = 724,922.16/1,218.50
  6. Step 6: Final answer
    x = 594.93

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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.