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Finding the Fourth Proportional to 801.30, 1,107.30 and 604.48

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Solution

The fourth proportional to 801.30, 1,107.30 and 604.48 is: 835.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    801.30 : 1,107.30 = 604.48 : x
  2. Step 2: Convert to fraction form
    801.30/1,107.30 = 604.48/x
  3. Step 3: Cross multiply
    801.30x = 1,107.30 × 604.48
  4. Step 4: Simplify right side
    801.30x = 669,340.70
  5. Step 5: Solve for x
    x = 669,340.70/801.30
  6. Step 6: Final answer
    x = 835.32

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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.