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Finding the Fourth Proportional to 625.55, 934.48 and 450.72

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Solution

The fourth proportional to 625.55, 934.48 and 450.72 is: 673.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    625.55 : 934.48 = 450.72 : x
  2. Step 2: Convert to fraction form
    625.55/934.48 = 450.72/x
  3. Step 3: Cross multiply
    625.55x = 934.48 × 450.72
  4. Step 4: Simplify right side
    625.55x = 421,189.39
  5. Step 5: Solve for x
    x = 421,189.39/625.55
  6. Step 6: Final answer
    x = 673.32

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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.