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Finding the Fourth Proportional to 620.12, 934.07 and 476.84

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Solution

The fourth proportional to 620.12, 934.07 and 476.84 is: 718.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    620.12 : 934.07 = 476.84 : x
  2. Step 2: Convert to fraction form
    620.12/934.07 = 476.84/x
  3. Step 3: Cross multiply
    620.12x = 934.07 × 476.84
  4. Step 4: Simplify right side
    620.12x = 445,401.94
  5. Step 5: Solve for x
    x = 445,401.94/620.12
  6. Step 6: Final answer
    x = 718.25

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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.