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Finding the Fourth Proportional to 555.22, 830.79 and 335.06

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Solution

The fourth proportional to 555.22, 830.79 and 335.06 is: 501.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    555.22 : 830.79 = 335.06 : x
  2. Step 2: Convert to fraction form
    555.22/830.79 = 335.06/x
  3. Step 3: Cross multiply
    555.22x = 830.79 × 335.06
  4. Step 4: Simplify right side
    555.22x = 278,364.50
  5. Step 5: Solve for x
    x = 278,364.50/555.22
  6. Step 6: Final answer
    x = 501.36

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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.