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Finding the Fourth Proportional to 450.01, 621.03 and 275.32

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Solution

The fourth proportional to 450.01, 621.03 and 275.32 is: 379.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    450.01 : 621.03 = 275.32 : x
  2. Step 2: Convert to fraction form
    450.01/621.03 = 275.32/x
  3. Step 3: Cross multiply
    450.01x = 621.03 × 275.32
  4. Step 4: Simplify right side
    450.01x = 170,981.98
  5. Step 5: Solve for x
    x = 170,981.98/450.01
  6. Step 6: Final answer
    x = 379.95

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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.