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Finding the Fourth Proportional to 631.07, 946.88 and 322.76

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Solution

The fourth proportional to 631.07, 946.88 and 322.76 is: 484.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    631.07 : 946.88 = 322.76 : x
  2. Step 2: Convert to fraction form
    631.07/946.88 = 322.76/x
  3. Step 3: Cross multiply
    631.07x = 946.88 × 322.76
  4. Step 4: Simplify right side
    631.07x = 305,608.64
  5. Step 5: Solve for x
    x = 305,608.64/631.07
  6. Step 6: Final answer
    x = 484.27

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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.