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Finding the Fourth Proportional to 722.19, 1,083.35 and 235.11

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Solution

The fourth proportional to 722.19, 1,083.35 and 235.11 is: 352.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    722.19 : 1,083.35 = 235.11 : x
  2. Step 2: Convert to fraction form
    722.19/1,083.35 = 235.11/x
  3. Step 3: Cross multiply
    722.19x = 1,083.35 × 235.11
  4. Step 4: Simplify right side
    722.19x = 254,706.42
  5. Step 5: Solve for x
    x = 254,706.42/722.19
  6. Step 6: Final answer
    x = 352.69

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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.