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Finding the Fourth Proportional to 953.32, 1,427.24 and 771.08

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Solution

The fourth proportional to 953.32, 1,427.24 and 771.08 is: 1,154.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    953.32 : 1,427.24 = 771.08 : x
  2. Step 2: Convert to fraction form
    953.32/1,427.24 = 771.08/x
  3. Step 3: Cross multiply
    953.32x = 1,427.24 × 771.08
  4. Step 4: Simplify right side
    953.32x = 1,100,516.22
  5. Step 5: Solve for x
    x = 1,100,516.22/953.32
  6. Step 6: Final answer
    x = 1,154.40

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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.