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Finding the Fourth Proportional to 418.50, 624.56 and 366.57

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Solution

The fourth proportional to 418.50, 624.56 and 366.57 is: 547.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    418.50 : 624.56 = 366.57 : x
  2. Step 2: Convert to fraction form
    418.50/624.56 = 366.57/x
  3. Step 3: Cross multiply
    418.50x = 624.56 × 366.57
  4. Step 4: Simplify right side
    418.50x = 228,943.13
  5. Step 5: Solve for x
    x = 228,943.13/418.50
  6. Step 6: Final answer
    x = 547.06

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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.