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Finding the Fourth Proportional to 701.74, 1,052.34 and 290.77

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Solution

The fourth proportional to 701.74, 1,052.34 and 290.77 is: 436.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    701.74 : 1,052.34 = 290.77 : x
  2. Step 2: Convert to fraction form
    701.74/1,052.34 = 290.77/x
  3. Step 3: Cross multiply
    701.74x = 1,052.34 × 290.77
  4. Step 4: Simplify right side
    701.74x = 305,988.90
  5. Step 5: Solve for x
    x = 305,988.90/701.74
  6. Step 6: Final answer
    x = 436.04

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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.