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Finding the Fourth Proportional to 630.42, 869.88 and 350.64

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Solution

The fourth proportional to 630.42, 869.88 and 350.64 is: 483.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    630.42 : 869.88 = 350.64 : x
  2. Step 2: Convert to fraction form
    630.42/869.88 = 350.64/x
  3. Step 3: Cross multiply
    630.42x = 869.88 × 350.64
  4. Step 4: Simplify right side
    630.42x = 305,014.72
  5. Step 5: Solve for x
    x = 305,014.72/630.42
  6. Step 6: Final answer
    x = 483.83

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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.