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Finding the Fourth Proportional to 630.13, 945.20 and 174.13

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Solution

The fourth proportional to 630.13, 945.20 and 174.13 is: 261.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    630.13 : 945.20 = 174.13 : x
  2. Step 2: Convert to fraction form
    630.13/945.20 = 174.13/x
  3. Step 3: Cross multiply
    630.13x = 945.20 × 174.13
  4. Step 4: Simplify right side
    630.13x = 164,587.68
  5. Step 5: Solve for x
    x = 164,587.68/630.13
  6. Step 6: Final answer
    x = 261.20

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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.