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Finding the Fourth Proportional to 437.93, 605.12 and 313.38

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Solution

The fourth proportional to 437.93, 605.12 and 313.38 is: 433.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    437.93 : 605.12 = 313.38 : x
  2. Step 2: Convert to fraction form
    437.93/605.12 = 313.38/x
  3. Step 3: Cross multiply
    437.93x = 605.12 × 313.38
  4. Step 4: Simplify right side
    437.93x = 189,629.55
  5. Step 5: Solve for x
    x = 189,629.55/437.93
  6. Step 6: Final answer
    x = 433.01

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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.