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Finding the Fourth Proportional to 456, 628.74 and 372.93

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Solution

The fourth proportional to 456, 628.74 and 372.93 is: 514.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    456 : 628.74 = 372.93 : x
  2. Step 2: Convert to fraction form
    456/628.74 = 372.93/x
  3. Step 3: Cross multiply
    456x = 628.74 × 372.93
  4. Step 4: Simplify right side
    456x = 234,476.01
  5. Step 5: Solve for x
    x = 234,476.01/456
  6. Step 6: Final answer
    x = 514.20

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.