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Finding the Fourth Proportional to 704.16, 1,049.16 and 660

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Solution

The fourth proportional to 704.16, 1,049.16 and 660 is: 983.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    704.16 : 1,049.16 = 660 : x
  2. Step 2: Convert to fraction form
    704.16/1,049.16 = 660/x
  3. Step 3: Cross multiply
    704.16x = 1,049.16 × 660
  4. Step 4: Simplify right side
    704.16x = 692,445.60
  5. Step 5: Solve for x
    x = 692,445.60/704.16
  6. Step 6: Final answer
    x = 983.36

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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.