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Finding the Fourth Proportional to 425.14, 637.72 and 116.99

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Solution

The fourth proportional to 425.14, 637.72 and 116.99 is: 175.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    425.14 : 637.72 = 116.99 : x
  2. Step 2: Convert to fraction form
    425.14/637.72 = 116.99/x
  3. Step 3: Cross multiply
    425.14x = 637.72 × 116.99
  4. Step 4: Simplify right side
    425.14x = 74,606.86
  5. Step 5: Solve for x
    x = 74,606.86/425.14
  6. Step 6: Final answer
    x = 175.49

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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.