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Finding the Fourth Proportional to 555.84, 832.21 and 281.34

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Solution

The fourth proportional to 555.84, 832.21 and 281.34 is: 421.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    555.84 : 832.21 = 281.34 : x
  2. Step 2: Convert to fraction form
    555.84/832.21 = 281.34/x
  3. Step 3: Cross multiply
    555.84x = 832.21 × 281.34
  4. Step 4: Simplify right side
    555.84x = 234,133.26
  5. Step 5: Solve for x
    x = 234,133.26/555.84
  6. Step 6: Final answer
    x = 421.22

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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.