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Finding the Fourth Proportional to 632.42, 872.76 and 352.66

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Solution

The fourth proportional to 632.42, 872.76 and 352.66 is: 486.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    632.42 : 872.76 = 352.66 : x
  2. Step 2: Convert to fraction form
    632.42/872.76 = 352.66/x
  3. Step 3: Cross multiply
    632.42x = 872.76 × 352.66
  4. Step 4: Simplify right side
    632.42x = 307,783.18
  5. Step 5: Solve for x
    x = 307,783.18/632.42
  6. Step 6: Final answer
    x = 486.68

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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.