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Finding the Fourth Proportional to 701.77, 1,052.96 and 291

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Solution

The fourth proportional to 701.77, 1,052.96 and 291 is: 436.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    701.77 : 1,052.96 = 291 : x
  2. Step 2: Convert to fraction form
    701.77/1,052.96 = 291/x
  3. Step 3: Cross multiply
    701.77x = 1,052.96 × 291
  4. Step 4: Simplify right side
    701.77x = 306,411.36
  5. Step 5: Solve for x
    x = 306,411.36/701.77
  6. Step 6: Final answer
    x = 436.63

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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.