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Finding the Fourth Proportional to 1,084.50, 1,626.76 and 262.77

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Solution

The fourth proportional to 1,084.50, 1,626.76 and 262.77 is: 394.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,084.50 : 1,626.76 = 262.77 : x
  2. Step 2: Convert to fraction form
    1,084.50/1,626.76 = 262.77/x
  3. Step 3: Cross multiply
    1,084.50x = 1,626.76 × 262.77
  4. Step 4: Simplify right side
    1,084.50x = 427,468.65
  5. Step 5: Solve for x
    x = 427,468.65/1,084.50
  6. Step 6: Final answer
    x = 394.16

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Double scale
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1.5x scale

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.