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Finding the Fourth Proportional to 704.01, 1,047.86 and 684.57

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Solution

The fourth proportional to 704.01, 1,047.86 and 684.57 is: 1,018.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    704.01 : 1,047.86 = 684.57 : x
  2. Step 2: Convert to fraction form
    704.01/1,047.86 = 684.57/x
  3. Step 3: Cross multiply
    704.01x = 1,047.86 × 684.57
  4. Step 4: Simplify right side
    704.01x = 717,330.10
  5. Step 5: Solve for x
    x = 717,330.10/704.01
  6. Step 6: Final answer
    x = 1,018.92

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.