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Finding the Fourth Proportional to 555.46, 766.06 and 481.75

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Solution

The fourth proportional to 555.46, 766.06 and 481.75 is: 664.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    555.46 : 766.06 = 481.75 : x
  2. Step 2: Convert to fraction form
    555.46/766.06 = 481.75/x
  3. Step 3: Cross multiply
    555.46x = 766.06 × 481.75
  4. Step 4: Simplify right side
    555.46x = 369,046.29
  5. Step 5: Solve for x
    x = 369,046.29/555.46
  6. Step 6: Final answer
    x = 664.40

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.