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Finding the Fourth Proportional to 723.98, 1,079.08 and 682.98

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Solution

The fourth proportional to 723.98, 1,079.08 and 682.98 is: 1,017.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    723.98 : 1,079.08 = 682.98 : x
  2. Step 2: Convert to fraction form
    723.98/1,079.08 = 682.98/x
  3. Step 3: Cross multiply
    723.98x = 1,079.08 × 682.98
  4. Step 4: Simplify right side
    723.98x = 736,990.06
  5. Step 5: Solve for x
    x = 736,990.06/723.98
  6. Step 6: Final answer
    x = 1,017.97

Related Problems

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Double scale
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1.5x scale

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.