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Finding the Fourth Proportional to 555.25, 832.60 and 324.20

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Solution

The fourth proportional to 555.25, 832.60 and 324.20 is: 486.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    555.25 : 832.60 = 324.20 : x
  2. Step 2: Convert to fraction form
    555.25/832.60 = 324.20/x
  3. Step 3: Cross multiply
    555.25x = 832.60 × 324.20
  4. Step 4: Simplify right side
    555.25x = 269,928.92
  5. Step 5: Solve for x
    x = 269,928.92/555.25
  6. Step 6: Final answer
    x = 486.14

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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.