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Finding the Fourth Proportional to 622.98, 859.38 and 456.96

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Solution

The fourth proportional to 622.98, 859.38 and 456.96 is: 630.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    622.98 : 859.38 = 456.96 : x
  2. Step 2: Convert to fraction form
    622.98/859.38 = 456.96/x
  3. Step 3: Cross multiply
    622.98x = 859.38 × 456.96
  4. Step 4: Simplify right side
    622.98x = 392,702.28
  5. Step 5: Solve for x
    x = 392,702.28/622.98
  6. Step 6: Final answer
    x = 630.36

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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.