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Finding the Fourth Proportional to 555.03, 832.28 and 311.49

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Solution

The fourth proportional to 555.03, 832.28 and 311.49 is: 467.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    555.03 : 832.28 = 311.49 : x
  2. Step 2: Convert to fraction form
    555.03/832.28 = 311.49/x
  3. Step 3: Cross multiply
    555.03x = 832.28 × 311.49
  4. Step 4: Simplify right side
    555.03x = 259,245.34
  5. Step 5: Solve for x
    x = 259,245.34/555.03
  6. Step 6: Final answer
    x = 467.08

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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.