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Finding the Fourth Proportional to 420.98, 630.62 and 334.46

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Solution

The fourth proportional to 420.98, 630.62 and 334.46 is: 501.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    420.98 : 630.62 = 334.46 : x
  2. Step 2: Convert to fraction form
    420.98/630.62 = 334.46/x
  3. Step 3: Cross multiply
    420.98x = 630.62 × 334.46
  4. Step 4: Simplify right side
    420.98x = 210,917.17
  5. Step 5: Solve for x
    x = 210,917.17/420.98
  6. Step 6: Final answer
    x = 501.01

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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.