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Finding the Fourth Proportional to 356.31, 530.87 and 338.88

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Solution

The fourth proportional to 356.31, 530.87 and 338.88 is: 504.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    356.31 : 530.87 = 338.88 : x
  2. Step 2: Convert to fraction form
    356.31/530.87 = 338.88/x
  3. Step 3: Cross multiply
    356.31x = 530.87 × 338.88
  4. Step 4: Simplify right side
    356.31x = 179,902.00
  5. Step 5: Solve for x
    x = 179,902.00/356.31
  6. Step 6: Final answer
    x = 504.90

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.