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Finding the Fourth Proportional to 1,036.72, 1,555.11 and 306.24

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Solution

The fourth proportional to 1,036.72, 1,555.11 and 306.24 is: 459.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,036.72 : 1,555.11 = 306.24 : x
  2. Step 2: Convert to fraction form
    1,036.72/1,555.11 = 306.24/x
  3. Step 3: Cross multiply
    1,036.72x = 1,555.11 × 306.24
  4. Step 4: Simplify right side
    1,036.72x = 476,236.89
  5. Step 5: Solve for x
    x = 476,236.89/1,036.72
  6. Step 6: Final answer
    x = 459.37

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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.