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Finding the Fourth Proportional to 622.53, 934.22 and 429.81

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Solution

The fourth proportional to 622.53, 934.22 and 429.81 is: 645.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    622.53 : 934.22 = 429.81 : x
  2. Step 2: Convert to fraction form
    622.53/934.22 = 429.81/x
  3. Step 3: Cross multiply
    622.53x = 934.22 × 429.81
  4. Step 4: Simplify right side
    622.53x = 401,534.95
  5. Step 5: Solve for x
    x = 401,534.95/622.53
  6. Step 6: Final answer
    x = 645.00

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.