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Finding the Fourth Proportional to 305.20, 457.04 and 176.72

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Solution

The fourth proportional to 305.20, 457.04 and 176.72 is: 264.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    305.20 : 457.04 = 176.72 : x
  2. Step 2: Convert to fraction form
    305.20/457.04 = 176.72/x
  3. Step 3: Cross multiply
    305.20x = 457.04 × 176.72
  4. Step 4: Simplify right side
    305.20x = 80,768.11
  5. Step 5: Solve for x
    x = 80,768.11/305.20
  6. Step 6: Final answer
    x = 264.64

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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.