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Finding the Fourth Proportional to 305.04, 457.72 and 112.72

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Solution

The fourth proportional to 305.04, 457.72 and 112.72 is: 169.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    305.04 : 457.72 = 112.72 : x
  2. Step 2: Convert to fraction form
    305.04/457.72 = 112.72/x
  3. Step 3: Cross multiply
    305.04x = 457.72 × 112.72
  4. Step 4: Simplify right side
    305.04x = 51,594.20
  5. Step 5: Solve for x
    x = 51,594.20/305.04
  6. Step 6: Final answer
    x = 169.14

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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.