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Finding the Fourth Proportional to 1,084.35, 1,626.62 and 354.00

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Solution

The fourth proportional to 1,084.35, 1,626.62 and 354.00 is: 531.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,084.35 : 1,626.62 = 354.00 : x
  2. Step 2: Convert to fraction form
    1,084.35/1,626.62 = 354.00/x
  3. Step 3: Cross multiply
    1,084.35x = 1,626.62 × 354.00
  4. Step 4: Simplify right side
    1,084.35x = 575,827.81
  5. Step 5: Solve for x
    x = 575,827.81/1,084.35
  6. Step 6: Final answer
    x = 531.03

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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.