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Finding the Fourth Proportional to 958.12, 1,437.68 and 409.96

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Solution

The fourth proportional to 958.12, 1,437.68 and 409.96 is: 615.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    958.12 : 1,437.68 = 409.96 : x
  2. Step 2: Convert to fraction form
    958.12/1,437.68 = 409.96/x
  3. Step 3: Cross multiply
    958.12x = 1,437.68 × 409.96
  4. Step 4: Simplify right side
    958.12x = 589,391.29
  5. Step 5: Solve for x
    x = 589,391.29/958.12
  6. Step 6: Final answer
    x = 615.15

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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.