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Finding the Fourth Proportional to 450.15, 621.71 and 444.07

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Solution

The fourth proportional to 450.15, 621.71 and 444.07 is: 613.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    450.15 : 621.71 = 444.07 : x
  2. Step 2: Convert to fraction form
    450.15/621.71 = 444.07/x
  3. Step 3: Cross multiply
    450.15x = 621.71 × 444.07
  4. Step 4: Simplify right side
    450.15x = 276,082.76
  5. Step 5: Solve for x
    x = 276,082.76/450.15
  6. Step 6: Final answer
    x = 613.31

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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.