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Finding the Fourth Proportional to 407.31, 610.86 and 245.04

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Solution

The fourth proportional to 407.31, 610.86 and 245.04 is: 367.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    407.31 : 610.86 = 245.04 : x
  2. Step 2: Convert to fraction form
    407.31/610.86 = 245.04/x
  3. Step 3: Cross multiply
    407.31x = 610.86 × 245.04
  4. Step 4: Simplify right side
    407.31x = 149,685.13
  5. Step 5: Solve for x
    x = 149,685.13/407.31
  6. Step 6: Final answer
    x = 367.50

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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.