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Finding the Fourth Proportional to 1,235.29, 1,851.56 and 773.28

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Solution

The fourth proportional to 1,235.29, 1,851.56 and 773.28 is: 1,159.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,235.29 : 1,851.56 = 773.28 : x
  2. Step 2: Convert to fraction form
    1,235.29/1,851.56 = 773.28/x
  3. Step 3: Cross multiply
    1,235.29x = 1,851.56 × 773.28
  4. Step 4: Simplify right side
    1,235.29x = 1,431,774.32
  5. Step 5: Solve for x
    x = 1,431,774.32/1,235.29
  6. Step 6: Final answer
    x = 1,159.06

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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.