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Finding the Fourth Proportional to 368.31, 555.21 and 337.56

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Solution

The fourth proportional to 368.31, 555.21 and 337.56 is: 508.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    368.31 : 555.21 = 337.56 : x
  2. Step 2: Convert to fraction form
    368.31/555.21 = 337.56/x
  3. Step 3: Cross multiply
    368.31x = 555.21 × 337.56
  4. Step 4: Simplify right side
    368.31x = 187,416.69
  5. Step 5: Solve for x
    x = 187,416.69/368.31
  6. Step 6: Final answer
    x = 508.86

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.