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Finding the Fourth Proportional to 622.40, 859.84 and 483.04

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Solution

The fourth proportional to 622.40, 859.84 and 483.04 is: 667.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    622.40 : 859.84 = 483.04 : x
  2. Step 2: Convert to fraction form
    622.40/859.84 = 483.04/x
  3. Step 3: Cross multiply
    622.40x = 859.84 × 483.04
  4. Step 4: Simplify right side
    622.40x = 415,337.11
  5. Step 5: Solve for x
    x = 415,337.11/622.40
  6. Step 6: Final answer
    x = 667.32

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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.