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Finding the Fourth Proportional to 631.56, 939.87 and 608.52

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Solution

The fourth proportional to 631.56, 939.87 and 608.52 is: 905.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    631.56 : 939.87 = 608.52 : x
  2. Step 2: Convert to fraction form
    631.56/939.87 = 608.52/x
  3. Step 3: Cross multiply
    631.56x = 939.87 × 608.52
  4. Step 4: Simplify right side
    631.56x = 571,929.69
  5. Step 5: Solve for x
    x = 571,929.69/631.56
  6. Step 6: Final answer
    x = 905.58

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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.