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Finding the Fourth Proportional to 706.64, 975.36 and 496.86

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Solution

The fourth proportional to 706.64, 975.36 and 496.86 is: 685.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    706.64 : 975.36 = 496.86 : x
  2. Step 2: Convert to fraction form
    706.64/975.36 = 496.86/x
  3. Step 3: Cross multiply
    706.64x = 975.36 × 496.86
  4. Step 4: Simplify right side
    706.64x = 484,614.89
  5. Step 5: Solve for x
    x = 484,614.89/706.64
  6. Step 6: Final answer
    x = 685.81

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.