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Finding the Fourth Proportional to 704.18, 1,054.23 and 660.53

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Solution

The fourth proportional to 704.18, 1,054.23 and 660.53 is: 988.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    704.18 : 1,054.23 = 660.53 : x
  2. Step 2: Convert to fraction form
    704.18/1,054.23 = 660.53/x
  3. Step 3: Cross multiply
    704.18x = 1,054.23 × 660.53
  4. Step 4: Simplify right side
    704.18x = 696,350.54
  5. Step 5: Solve for x
    x = 696,350.54/704.18
  6. Step 6: Final answer
    x = 988.88

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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.