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Finding the Fourth Proportional to 1,235.46, 1,853.18 and 505.04

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Solution

The fourth proportional to 1,235.46, 1,853.18 and 505.04 is: 757.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,235.46 : 1,853.18 = 505.04 : x
  2. Step 2: Convert to fraction form
    1,235.46/1,853.18 = 505.04/x
  3. Step 3: Cross multiply
    1,235.46x = 1,853.18 × 505.04
  4. Step 4: Simplify right side
    1,235.46x = 935,922.02
  5. Step 5: Solve for x
    x = 935,922.02/1,235.46
  6. Step 6: Final answer
    x = 757.55

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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.