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Finding the Fourth Proportional to 701.63, 1,051.87 and 291.06

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Solution

The fourth proportional to 701.63, 1,051.87 and 291.06 is: 436.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    701.63 : 1,051.87 = 291.06 : x
  2. Step 2: Convert to fraction form
    701.63/1,051.87 = 291.06/x
  3. Step 3: Cross multiply
    701.63x = 1,051.87 × 291.06
  4. Step 4: Simplify right side
    701.63x = 306,157.28
  5. Step 5: Solve for x
    x = 306,157.28/701.63
  6. Step 6: Final answer
    x = 436.35

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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.