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Finding the Fourth Proportional to 620.04, 853.20 and 601.86

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Solution

The fourth proportional to 620.04, 853.20 and 601.86 is: 828.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    620.04 : 853.20 = 601.86 : x
  2. Step 2: Convert to fraction form
    620.04/853.20 = 601.86/x
  3. Step 3: Cross multiply
    620.04x = 853.20 × 601.86
  4. Step 4: Simplify right side
    620.04x = 513,506.95
  5. Step 5: Solve for x
    x = 513,506.95/620.04
  6. Step 6: Final answer
    x = 828.18

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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.