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Finding the Fourth Proportional to 1,220.31, 1,830.92 and 733.71

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Solution

The fourth proportional to 1,220.31, 1,830.92 and 733.71 is: 1,100.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,220.31 : 1,830.92 = 733.71 : x
  2. Step 2: Convert to fraction form
    1,220.31/1,830.92 = 733.71/x
  3. Step 3: Cross multiply
    1,220.31x = 1,830.92 × 733.71
  4. Step 4: Simplify right side
    1,220.31x = 1,343,364.31
  5. Step 5: Solve for x
    x = 1,343,364.31/1,220.31
  6. Step 6: Final answer
    x = 1,100.84

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1.5x scale

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.