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Finding the Fourth Proportional to 630.86, 945.52 and 265.22

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Solution

The fourth proportional to 630.86, 945.52 and 265.22 is: 397.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    630.86 : 945.52 = 265.22 : x
  2. Step 2: Convert to fraction form
    630.86/945.52 = 265.22/x
  3. Step 3: Cross multiply
    630.86x = 945.52 × 265.22
  4. Step 4: Simplify right side
    630.86x = 250,770.81
  5. Step 5: Solve for x
    x = 250,770.81/630.86
  6. Step 6: Final answer
    x = 397.51

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Half scale
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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.