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Finding the Fourth Proportional to 1,235.07, 1,853.40 and 465.57

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Solution

The fourth proportional to 1,235.07, 1,853.40 and 465.57 is: 698.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,235.07 : 1,853.40 = 465.57 : x
  2. Step 2: Convert to fraction form
    1,235.07/1,853.40 = 465.57/x
  3. Step 3: Cross multiply
    1,235.07x = 1,853.40 × 465.57
  4. Step 4: Simplify right side
    1,235.07x = 862,887.44
  5. Step 5: Solve for x
    x = 862,887.44/1,235.07
  6. Step 6: Final answer
    x = 698.65

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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.