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Finding the Fourth Proportional to 1,890.51, 2,835.76 and 484.93

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Solution

The fourth proportional to 1,890.51, 2,835.76 and 484.93 is: 727.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,890.51 : 2,835.76 = 484.93 : x
  2. Step 2: Convert to fraction form
    1,890.51/2,835.76 = 484.93/x
  3. Step 3: Cross multiply
    1,890.51x = 2,835.76 × 484.93
  4. Step 4: Simplify right side
    1,890.51x = 1,375,140.36
  5. Step 5: Solve for x
    x = 1,375,140.36/1,890.51
  6. Step 6: Final answer
    x = 727.39

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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.