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Finding the Fourth Proportional to 630.64, 945.68 and 265.23

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Solution

The fourth proportional to 630.64, 945.68 and 265.23 is: 397.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    630.64 : 945.68 = 265.23 : x
  2. Step 2: Convert to fraction form
    630.64/945.68 = 265.23/x
  3. Step 3: Cross multiply
    630.64x = 945.68 × 265.23
  4. Step 4: Simplify right side
    630.64x = 250,821.38
  5. Step 5: Solve for x
    x = 250,821.38/630.64
  6. Step 6: Final answer
    x = 397.72

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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.