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Finding the Fourth Proportional to 722.84, 1,084.94 and 357.89

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Solution

The fourth proportional to 722.84, 1,084.94 and 357.89 is: 537.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    722.84 : 1,084.94 = 357.89 : x
  2. Step 2: Convert to fraction form
    722.84/1,084.94 = 357.89/x
  3. Step 3: Cross multiply
    722.84x = 1,084.94 × 357.89
  4. Step 4: Simplify right side
    722.84x = 388,283.30
  5. Step 5: Solve for x
    x = 388,283.30/722.84
  6. Step 6: Final answer
    x = 537.17

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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.