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Finding the Fourth Proportional to 733.97, 1,012.89 and 402.38

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Solution

The fourth proportional to 733.97, 1,012.89 and 402.38 is: 555.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    733.97 : 1,012.89 = 402.38 : x
  2. Step 2: Convert to fraction form
    733.97/1,012.89 = 402.38/x
  3. Step 3: Cross multiply
    733.97x = 1,012.89 × 402.38
  4. Step 4: Simplify right side
    733.97x = 407,563.51
  5. Step 5: Solve for x
    x = 407,563.51/733.97
  6. Step 6: Final answer
    x = 555.29

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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.