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Finding the Fourth Proportional to 630.34, 945.52 and 219.26

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Solution

The fourth proportional to 630.34, 945.52 and 219.26 is: 328.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    630.34 : 945.52 = 219.26 : x
  2. Step 2: Convert to fraction form
    630.34/945.52 = 219.26/x
  3. Step 3: Cross multiply
    630.34x = 945.52 × 219.26
  4. Step 4: Simplify right side
    630.34x = 207,314.72
  5. Step 5: Solve for x
    x = 207,314.72/630.34
  6. Step 6: Final answer
    x = 328.89

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Double scale
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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.