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Finding the Fourth Proportional to 671.16, 927.38 and 485.27

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Solution

The fourth proportional to 671.16, 927.38 and 485.27 is: 670.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    671.16 : 927.38 = 485.27 : x
  2. Step 2: Convert to fraction form
    671.16/927.38 = 485.27/x
  3. Step 3: Cross multiply
    671.16x = 927.38 × 485.27
  4. Step 4: Simplify right side
    671.16x = 450,029.69
  5. Step 5: Solve for x
    x = 450,029.69/671.16
  6. Step 6: Final answer
    x = 670.53

Related Problems

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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.