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Finding the Fourth Proportional to 958.61, 1,437.98 and 309.37

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Solution

The fourth proportional to 958.61, 1,437.98 and 309.37 is: 464.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    958.61 : 1,437.98 = 309.37 : x
  2. Step 2: Convert to fraction form
    958.61/1,437.98 = 309.37/x
  3. Step 3: Cross multiply
    958.61x = 1,437.98 × 309.37
  4. Step 4: Simplify right side
    958.61x = 444,866.33
  5. Step 5: Solve for x
    x = 444,866.33/958.61
  6. Step 6: Final answer
    x = 464.07

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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.