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Finding the Fourth Proportional to 631.06, 945.06 and 469.78

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Solution

The fourth proportional to 631.06, 945.06 and 469.78 is: 703.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    631.06 : 945.06 = 469.78 : x
  2. Step 2: Convert to fraction form
    631.06/945.06 = 469.78/x
  3. Step 3: Cross multiply
    631.06x = 945.06 × 469.78
  4. Step 4: Simplify right side
    631.06x = 443,970.29
  5. Step 5: Solve for x
    x = 443,970.29/631.06
  6. Step 6: Final answer
    x = 703.53

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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.