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Finding the Fourth Proportional to 456.41, 685.53 and 302.55

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Solution

The fourth proportional to 456.41, 685.53 and 302.55 is: 454.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    456.41 : 685.53 = 302.55 : x
  2. Step 2: Convert to fraction form
    456.41/685.53 = 302.55/x
  3. Step 3: Cross multiply
    456.41x = 685.53 × 302.55
  4. Step 4: Simplify right side
    456.41x = 207,407.10
  5. Step 5: Solve for x
    x = 207,407.10/456.41
  6. Step 6: Final answer
    x = 454.44

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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.