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Finding the Fourth Proportional to 555.35, 832.16 and 281.03

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Solution

The fourth proportional to 555.35, 832.16 and 281.03 is: 421.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    555.35 : 832.16 = 281.03 : x
  2. Step 2: Convert to fraction form
    555.35/832.16 = 281.03/x
  3. Step 3: Cross multiply
    555.35x = 832.16 × 281.03
  4. Step 4: Simplify right side
    555.35x = 233,856.36
  5. Step 5: Solve for x
    x = 233,856.36/555.35
  6. Step 6: Final answer
    x = 421.10

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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.