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Finding the Fourth Proportional to 703.20, 1,051.08 and 698.16

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Solution

The fourth proportional to 703.20, 1,051.08 and 698.16 is: 1,043.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    703.20 : 1,051.08 = 698.16 : x
  2. Step 2: Convert to fraction form
    703.20/1,051.08 = 698.16/x
  3. Step 3: Cross multiply
    703.20x = 1,051.08 × 698.16
  4. Step 4: Simplify right side
    703.20x = 733,822.01
  5. Step 5: Solve for x
    x = 733,822.01/703.20
  6. Step 6: Final answer
    x = 1,043.55

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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.