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Finding the Fourth Proportional to 631.08, 939.52 and 628.02

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Solution

The fourth proportional to 631.08, 939.52 and 628.02 is: 934.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    631.08 : 939.52 = 628.02 : x
  2. Step 2: Convert to fraction form
    631.08/939.52 = 628.02/x
  3. Step 3: Cross multiply
    631.08x = 939.52 × 628.02
  4. Step 4: Simplify right side
    631.08x = 590,037.35
  5. Step 5: Solve for x
    x = 590,037.35/631.08
  6. Step 6: Final answer
    x = 934.96

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.