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Finding the Fourth Proportional to 876.07, 1,314.11 and 443.53

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Solution

The fourth proportional to 876.07, 1,314.11 and 443.53 is: 665.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    876.07 : 1,314.11 = 443.53 : x
  2. Step 2: Convert to fraction form
    876.07/1,314.11 = 443.53/x
  3. Step 3: Cross multiply
    876.07x = 1,314.11 × 443.53
  4. Step 4: Simplify right side
    876.07x = 582,847.21
  5. Step 5: Solve for x
    x = 582,847.21/876.07
  6. Step 6: Final answer
    x = 665.30

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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.