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Finding the Fourth Proportional to 424.98, 637.60 and 181.50

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Solution

The fourth proportional to 424.98, 637.60 and 181.50 is: 272.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    424.98 : 637.60 = 181.50 : x
  2. Step 2: Convert to fraction form
    424.98/637.60 = 181.50/x
  3. Step 3: Cross multiply
    424.98x = 637.60 × 181.50
  4. Step 4: Simplify right side
    424.98x = 115,724.40
  5. Step 5: Solve for x
    x = 115,724.40/424.98
  6. Step 6: Final answer
    x = 272.31

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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.