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Finding the Fourth Proportional to 743.16, 1,114.74 and 230.16

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Solution

The fourth proportional to 743.16, 1,114.74 and 230.16 is: 345.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    743.16 : 1,114.74 = 230.16 : x
  2. Step 2: Convert to fraction form
    743.16/1,114.74 = 230.16/x
  3. Step 3: Cross multiply
    743.16x = 1,114.74 × 230.16
  4. Step 4: Simplify right side
    743.16x = 256,568.56
  5. Step 5: Solve for x
    x = 256,568.56/743.16
  6. Step 6: Final answer
    x = 345.24

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Double scale
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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.