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Finding the Fourth Proportional to 626.40, 856.92 and 623.52

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Solution

The fourth proportional to 626.40, 856.92 and 623.52 is: 852.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    626.40 : 856.92 = 623.52 : x
  2. Step 2: Convert to fraction form
    626.40/856.92 = 623.52/x
  3. Step 3: Cross multiply
    626.40x = 856.92 × 623.52
  4. Step 4: Simplify right side
    626.40x = 534,306.76
  5. Step 5: Solve for x
    x = 534,306.76/626.40
  6. Step 6: Final answer
    x = 852.98

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.