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Finding the Fourth Proportional to 958.16, 1,436.52 and 636.08

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Solution

The fourth proportional to 958.16, 1,436.52 and 636.08 is: 953.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    958.16 : 1,436.52 = 636.08 : x
  2. Step 2: Convert to fraction form
    958.16/1,436.52 = 636.08/x
  3. Step 3: Cross multiply
    958.16x = 1,436.52 × 636.08
  4. Step 4: Simplify right side
    958.16x = 913,741.64
  5. Step 5: Solve for x
    x = 913,741.64/958.16
  6. Step 6: Final answer
    x = 953.64

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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.