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Finding the Fourth Proportional to 352.33, 485.93 and 313.02

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Solution

The fourth proportional to 352.33, 485.93 and 313.02 is: 431.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    352.33 : 485.93 = 313.02 : x
  2. Step 2: Convert to fraction form
    352.33/485.93 = 313.02/x
  3. Step 3: Cross multiply
    352.33x = 485.93 × 313.02
  4. Step 4: Simplify right side
    352.33x = 152,105.81
  5. Step 5: Solve for x
    x = 152,105.81/352.33
  6. Step 6: Final answer
    x = 431.71

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.