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Finding the Fourth Proportional to 422.94, 631.37 and 368.25

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Solution

The fourth proportional to 422.94, 631.37 and 368.25 is: 549.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    422.94 : 631.37 = 368.25 : x
  2. Step 2: Convert to fraction form
    422.94/631.37 = 368.25/x
  3. Step 3: Cross multiply
    422.94x = 631.37 × 368.25
  4. Step 4: Simplify right side
    422.94x = 232,500.16
  5. Step 5: Solve for x
    x = 232,500.16/422.94
  6. Step 6: Final answer
    x = 549.72

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.