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Finding the Fourth Proportional to 703.92, 970.47 and 482.79

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Solution

The fourth proportional to 703.92, 970.47 and 482.79 is: 665.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    703.92 : 970.47 = 482.79 : x
  2. Step 2: Convert to fraction form
    703.92/970.47 = 482.79/x
  3. Step 3: Cross multiply
    703.92x = 970.47 × 482.79
  4. Step 4: Simplify right side
    703.92x = 468,533.21
  5. Step 5: Solve for x
    x = 468,533.21/703.92
  6. Step 6: Final answer
    x = 665.61

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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.