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Finding the Fourth Proportional to 703.41, 1,047.88 and 671.82

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Solution

The fourth proportional to 703.41, 1,047.88 and 671.82 is: 1,000.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    703.41 : 1,047.88 = 671.82 : x
  2. Step 2: Convert to fraction form
    703.41/1,047.88 = 671.82/x
  3. Step 3: Cross multiply
    703.41x = 1,047.88 × 671.82
  4. Step 4: Simplify right side
    703.41x = 703,986.74
  5. Step 5: Solve for x
    x = 703,986.74/703.41
  6. Step 6: Final answer
    x = 1,000.82

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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.