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Finding the Fourth Proportional to 656.59, 984.23 and 425.63

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Solution

The fourth proportional to 656.59, 984.23 and 425.63 is: 638.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    656.59 : 984.23 = 425.63 : x
  2. Step 2: Convert to fraction form
    656.59/984.23 = 425.63/x
  3. Step 3: Cross multiply
    656.59x = 984.23 × 425.63
  4. Step 4: Simplify right side
    656.59x = 418,915.78
  5. Step 5: Solve for x
    x = 418,915.78/656.59
  6. Step 6: Final answer
    x = 638.01

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.