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Finding the Fourth Proportional to 457.06, 630.76 and 250.06

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Solution

The fourth proportional to 457.06, 630.76 and 250.06 is: 345.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    457.06 : 630.76 = 250.06 : x
  2. Step 2: Convert to fraction form
    457.06/630.76 = 250.06/x
  3. Step 3: Cross multiply
    457.06x = 630.76 × 250.06
  4. Step 4: Simplify right side
    457.06x = 157,727.85
  5. Step 5: Solve for x
    x = 157,727.85/457.06
  6. Step 6: Final answer
    x = 345.09

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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.