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Finding the Fourth Proportional to 1,084.51, 1,626.98 and 353.89

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Solution

The fourth proportional to 1,084.51, 1,626.98 and 353.89 is: 530.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,084.51 : 1,626.98 = 353.89 : x
  2. Step 2: Convert to fraction form
    1,084.51/1,626.98 = 353.89/x
  3. Step 3: Cross multiply
    1,084.51x = 1,626.98 × 353.89
  4. Step 4: Simplify right side
    1,084.51x = 575,766.12
  5. Step 5: Solve for x
    x = 575,766.12/1,084.51
  6. Step 6: Final answer
    x = 530.90

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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.