Home / 687.06-948.20-425.23

Finding the Fourth Proportional to 687.06, 948.20 and 425.23

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Solution

The fourth proportional to 687.06, 948.20 and 425.23 is: 586.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    687.06 : 948.20 = 425.23 : x
  2. Step 2: Convert to fraction form
    687.06/948.20 = 425.23/x
  3. Step 3: Cross multiply
    687.06x = 948.20 × 425.23
  4. Step 4: Simplify right side
    687.06x = 403,202.02
  5. Step 5: Solve for x
    x = 403,202.02/687.06
  6. Step 6: Final answer
    x = 586.85

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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.