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Finding the Fourth Proportional to 630.38, 945.57 and 265.06

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Solution

The fourth proportional to 630.38, 945.57 and 265.06 is: 397.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    630.38 : 945.57 = 265.06 : x
  2. Step 2: Convert to fraction form
    630.38/945.57 = 265.06/x
  3. Step 3: Cross multiply
    630.38x = 945.57 × 265.06
  4. Step 4: Simplify right side
    630.38x = 250,632.78
  5. Step 5: Solve for x
    x = 250,632.78/630.38
  6. Step 6: Final answer
    x = 397.59

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Similar ratio
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1.5x scale

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.