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Finding the Fourth Proportional to 701.25, 1,051.83 and 290.28

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Solution

The fourth proportional to 701.25, 1,051.83 and 290.28 is: 435.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    701.25 : 1,051.83 = 290.28 : x
  2. Step 2: Convert to fraction form
    701.25/1,051.83 = 290.28/x
  3. Step 3: Cross multiply
    701.25x = 1,051.83 × 290.28
  4. Step 4: Simplify right side
    701.25x = 305,325.21
  5. Step 5: Solve for x
    x = 305,325.21/701.25
  6. Step 6: Final answer
    x = 435.40

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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.