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Finding the Fourth Proportional to 555.34, 764.48 and 481.22

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Solution

The fourth proportional to 555.34, 764.48 and 481.22 is: 662.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    555.34 : 764.48 = 481.22 : x
  2. Step 2: Convert to fraction form
    555.34/764.48 = 481.22/x
  3. Step 3: Cross multiply
    555.34x = 764.48 × 481.22
  4. Step 4: Simplify right side
    555.34x = 367,883.07
  5. Step 5: Solve for x
    x = 367,883.07/555.34
  6. Step 6: Final answer
    x = 662.45

Related Problems

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Half scale
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Double scale
Find fourth proportional to 556.34, 765.86 and 482.22
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.