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Finding the Fourth Proportional to 958.30, 1,436.53 and 464.40

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Solution

The fourth proportional to 958.30, 1,436.53 and 464.40 is: 696.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    958.30 : 1,436.53 = 464.40 : x
  2. Step 2: Convert to fraction form
    958.30/1,436.53 = 464.40/x
  3. Step 3: Cross multiply
    958.30x = 1,436.53 × 464.40
  4. Step 4: Simplify right side
    958.30x = 667,115.03
  5. Step 5: Solve for x
    x = 667,115.03/958.30
  6. Step 6: Final answer
    x = 696.15

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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.