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Finding the Fourth Proportional to 457.03, 630.10 and 330.88

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Solution

The fourth proportional to 457.03, 630.10 and 330.88 is: 456.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    457.03 : 630.10 = 330.88 : x
  2. Step 2: Convert to fraction form
    457.03/630.10 = 330.88/x
  3. Step 3: Cross multiply
    457.03x = 630.10 × 330.88
  4. Step 4: Simplify right side
    457.03x = 208,487.49
  5. Step 5: Solve for x
    x = 208,487.49/457.03
  6. Step 6: Final answer
    x = 456.18

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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.