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Finding the Fourth Proportional to 630.34, 945.23 and 305.51

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Solution

The fourth proportional to 630.34, 945.23 and 305.51 is: 458.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    630.34 : 945.23 = 305.51 : x
  2. Step 2: Convert to fraction form
    630.34/945.23 = 305.51/x
  3. Step 3: Cross multiply
    630.34x = 945.23 × 305.51
  4. Step 4: Simplify right side
    630.34x = 288,770.96
  5. Step 5: Solve for x
    x = 288,770.96/630.34
  6. Step 6: Final answer
    x = 458.12

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.