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Finding the Fourth Proportional to 950.72, 1,427.28 and 807.36

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Solution

The fourth proportional to 950.72, 1,427.28 and 807.36 is: 1,212.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    950.72 : 1,427.28 = 807.36 : x
  2. Step 2: Convert to fraction form
    950.72/1,427.28 = 807.36/x
  3. Step 3: Cross multiply
    950.72x = 1,427.28 × 807.36
  4. Step 4: Simplify right side
    950.72x = 1,152,328.78
  5. Step 5: Solve for x
    x = 1,152,328.78/950.72
  6. Step 6: Final answer
    x = 1,212.06

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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.