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Finding the Fourth Proportional to 1,084.66, 1,626.99 and 354.10

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Solution

The fourth proportional to 1,084.66, 1,626.99 and 354.10 is: 531.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,084.66 : 1,626.99 = 354.10 : x
  2. Step 2: Convert to fraction form
    1,084.66/1,626.99 = 354.10/x
  3. Step 3: Cross multiply
    1,084.66x = 1,626.99 × 354.10
  4. Step 4: Simplify right side
    1,084.66x = 576,117.16
  5. Step 5: Solve for x
    x = 576,117.16/1,084.66
  6. Step 6: Final answer
    x = 531.15

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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.