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Finding the Fourth Proportional to 701.76, 1,052.72 and 291.19

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Solution

The fourth proportional to 701.76, 1,052.72 and 291.19 is: 436.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    701.76 : 1,052.72 = 291.19 : x
  2. Step 2: Convert to fraction form
    701.76/1,052.72 = 291.19/x
  3. Step 3: Cross multiply
    701.76x = 1,052.72 × 291.19
  4. Step 4: Simplify right side
    701.76x = 306,538.37
  5. Step 5: Solve for x
    x = 306,538.37/701.76
  6. Step 6: Final answer
    x = 436.82

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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.