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Finding the Fourth Proportional to 1,036.99, 1,555.75 and 306.57

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Solution

The fourth proportional to 1,036.99, 1,555.75 and 306.57 is: 459.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,036.99 : 1,555.75 = 306.57 : x
  2. Step 2: Convert to fraction form
    1,036.99/1,555.75 = 306.57/x
  3. Step 3: Cross multiply
    1,036.99x = 1,555.75 × 306.57
  4. Step 4: Simplify right side
    1,036.99x = 476,942.77
  5. Step 5: Solve for x
    x = 476,942.77/1,036.99
  6. Step 6: Final answer
    x = 459.93

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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.