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Finding the Fourth Proportional to 407.11, 610.65 and 175.80

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Solution

The fourth proportional to 407.11, 610.65 and 175.80 is: 263.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    407.11 : 610.65 = 175.80 : x
  2. Step 2: Convert to fraction form
    407.11/610.65 = 175.80/x
  3. Step 3: Cross multiply
    407.11x = 610.65 × 175.80
  4. Step 4: Simplify right side
    407.11x = 107,352.27
  5. Step 5: Solve for x
    x = 107,352.27/407.11
  6. Step 6: Final answer
    x = 263.69

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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.