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Finding the Fourth Proportional to 620.24, 854.19 and 574.07

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Solution

The fourth proportional to 620.24, 854.19 and 574.07 is: 790.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    620.24 : 854.19 = 574.07 : x
  2. Step 2: Convert to fraction form
    620.24/854.19 = 574.07/x
  3. Step 3: Cross multiply
    620.24x = 854.19 × 574.07
  4. Step 4: Simplify right side
    620.24x = 490,360.58
  5. Step 5: Solve for x
    x = 490,360.58/620.24
  6. Step 6: Final answer
    x = 790.60

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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.