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Finding the Fourth Proportional to 1,354.57, 1,869.30 and 733.57

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Solution

The fourth proportional to 1,354.57, 1,869.30 and 733.57 is: 1,012.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,354.57 : 1,869.30 = 733.57 : x
  2. Step 2: Convert to fraction form
    1,354.57/1,869.30 = 733.57/x
  3. Step 3: Cross multiply
    1,354.57x = 1,869.30 × 733.57
  4. Step 4: Simplify right side
    1,354.57x = 1,371,257.73
  5. Step 5: Solve for x
    x = 1,371,257.73/1,354.57
  6. Step 6: Final answer
    x = 1,012.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.