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Finding the Fourth Proportional to 443.12, 610.52 and 303.18

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Solution

The fourth proportional to 443.12, 610.52 and 303.18 is: 417.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    443.12 : 610.52 = 303.18 : x
  2. Step 2: Convert to fraction form
    443.12/610.52 = 303.18/x
  3. Step 3: Cross multiply
    443.12x = 610.52 × 303.18
  4. Step 4: Simplify right side
    443.12x = 185,095.94
  5. Step 5: Solve for x
    x = 185,095.94/443.12
  6. Step 6: Final answer
    x = 417.72

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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.