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Finding the Fourth Proportional to 958.16, 1,437.36 and 308.96

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Solution

The fourth proportional to 958.16, 1,437.36 and 308.96 is: 463.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    958.16 : 1,437.36 = 308.96 : x
  2. Step 2: Convert to fraction form
    958.16/1,437.36 = 308.96/x
  3. Step 3: Cross multiply
    958.16x = 1,437.36 × 308.96
  4. Step 4: Simplify right side
    958.16x = 444,086.75
  5. Step 5: Solve for x
    x = 444,086.75/958.16
  6. Step 6: Final answer
    x = 463.48

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1.5x scale

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.