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Finding the Fourth Proportional to 522.45, 779.90 and 484.45

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Solution

The fourth proportional to 522.45, 779.90 and 484.45 is: 723.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    522.45 : 779.90 = 484.45 : x
  2. Step 2: Convert to fraction form
    522.45/779.90 = 484.45/x
  3. Step 3: Cross multiply
    522.45x = 779.90 × 484.45
  4. Step 4: Simplify right side
    522.45x = 377,818.18
  5. Step 5: Solve for x
    x = 377,818.18/522.45
  6. Step 6: Final answer
    x = 723.17

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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.