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Finding the Fourth Proportional to 620.19, 855.95 and 601.07

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Solution

The fourth proportional to 620.19, 855.95 and 601.07 is: 829.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    620.19 : 855.95 = 601.07 : x
  2. Step 2: Convert to fraction form
    620.19/855.95 = 601.07/x
  3. Step 3: Cross multiply
    620.19x = 855.95 × 601.07
  4. Step 4: Simplify right side
    620.19x = 514,478.58
  5. Step 5: Solve for x
    x = 514,478.58/620.19
  6. Step 6: Final answer
    x = 829.55

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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.