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Finding the Fourth Proportional to 456.93, 630.05 and 282.11

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Solution

The fourth proportional to 456.93, 630.05 and 282.11 is: 388.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    456.93 : 630.05 = 282.11 : x
  2. Step 2: Convert to fraction form
    456.93/630.05 = 282.11/x
  3. Step 3: Cross multiply
    456.93x = 630.05 × 282.11
  4. Step 4: Simplify right side
    456.93x = 177,738.84
  5. Step 5: Solve for x
    x = 177,738.84/456.93
  6. Step 6: Final answer
    x = 388.98

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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.