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Finding the Fourth Proportional to 418.02, 624.05 and 363.36

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Solution

The fourth proportional to 418.02, 624.05 and 363.36 is: 542.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    418.02 : 624.05 = 363.36 : x
  2. Step 2: Convert to fraction form
    418.02/624.05 = 363.36/x
  3. Step 3: Cross multiply
    418.02x = 624.05 × 363.36
  4. Step 4: Simplify right side
    418.02x = 226,752.99
  5. Step 5: Solve for x
    x = 226,752.99/418.02
  6. Step 6: Final answer
    x = 542.45

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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.