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Finding the Fourth Proportional to 620.29, 854.79 and 526.72

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Solution

The fourth proportional to 620.29, 854.79 and 526.72 is: 725.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    620.29 : 854.79 = 526.72 : x
  2. Step 2: Convert to fraction form
    620.29/854.79 = 526.72/x
  3. Step 3: Cross multiply
    620.29x = 854.79 × 526.72
  4. Step 4: Simplify right side
    620.29x = 450,234.99
  5. Step 5: Solve for x
    x = 450,234.99/620.29
  6. Step 6: Final answer
    x = 725.85

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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.