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Finding the Fourth Proportional to 703.73, 1,051.67 and 631.46

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Solution

The fourth proportional to 703.73, 1,051.67 and 631.46 is: 943.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    703.73 : 1,051.67 = 631.46 : x
  2. Step 2: Convert to fraction form
    703.73/1,051.67 = 631.46/x
  3. Step 3: Cross multiply
    703.73x = 1,051.67 × 631.46
  4. Step 4: Simplify right side
    703.73x = 664,084.38
  5. Step 5: Solve for x
    x = 664,084.38/703.73
  6. Step 6: Final answer
    x = 943.66

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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.