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Finding the Fourth Proportional to 451.18, 621.98 and 363.70

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Solution

The fourth proportional to 451.18, 621.98 and 363.70 is: 501.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    451.18 : 621.98 = 363.70 : x
  2. Step 2: Convert to fraction form
    451.18/621.98 = 363.70/x
  3. Step 3: Cross multiply
    451.18x = 621.98 × 363.70
  4. Step 4: Simplify right side
    451.18x = 226,214.13
  5. Step 5: Solve for x
    x = 226,214.13/451.18
  6. Step 6: Final answer
    x = 501.38

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.