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Finding the Fourth Proportional to 495.19, 745.42 and 450.55

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Solution

The fourth proportional to 495.19, 745.42 and 450.55 is: 678.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    495.19 : 745.42 = 450.55 : x
  2. Step 2: Convert to fraction form
    495.19/745.42 = 450.55/x
  3. Step 3: Cross multiply
    495.19x = 745.42 × 450.55
  4. Step 4: Simplify right side
    495.19x = 335,848.98
  5. Step 5: Solve for x
    x = 335,848.98/495.19
  6. Step 6: Final answer
    x = 678.22

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.