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Finding the Fourth Proportional to 630.93, 945.32 and 342.57

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Solution

The fourth proportional to 630.93, 945.32 and 342.57 is: 513.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    630.93 : 945.32 = 342.57 : x
  2. Step 2: Convert to fraction form
    630.93/945.32 = 342.57/x
  3. Step 3: Cross multiply
    630.93x = 945.32 × 342.57
  4. Step 4: Simplify right side
    630.93x = 323,836.56
  5. Step 5: Solve for x
    x = 323,836.56/630.93
  6. Step 6: Final answer
    x = 513.27

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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.