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Finding the Fourth Proportional to 632.18, 870.46 and 482.94

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Solution

The fourth proportional to 632.18, 870.46 and 482.94 is: 664.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    632.18 : 870.46 = 482.94 : x
  2. Step 2: Convert to fraction form
    632.18/870.46 = 482.94/x
  3. Step 3: Cross multiply
    632.18x = 870.46 × 482.94
  4. Step 4: Simplify right side
    632.18x = 420,379.95
  5. Step 5: Solve for x
    x = 420,379.95/632.18
  6. Step 6: Final answer
    x = 664.97

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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.