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Finding the Fourth Proportional to 632.90, 873.45 and 353.22

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Solution

The fourth proportional to 632.90, 873.45 and 353.22 is: 487.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    632.90 : 873.45 = 353.22 : x
  2. Step 2: Convert to fraction form
    632.90/873.45 = 353.22/x
  3. Step 3: Cross multiply
    632.90x = 873.45 × 353.22
  4. Step 4: Simplify right side
    632.90x = 308,518.24
  5. Step 5: Solve for x
    x = 308,518.24/632.90
  6. Step 6: Final answer
    x = 487.47

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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.