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Finding the Fourth Proportional to 407.00, 610.63 and 276.81

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Solution

The fourth proportional to 407.00, 610.63 and 276.81 is: 415.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    407.00 : 610.63 = 276.81 : x
  2. Step 2: Convert to fraction form
    407.00/610.63 = 276.81/x
  3. Step 3: Cross multiply
    407.00x = 610.63 × 276.81
  4. Step 4: Simplify right side
    407.00x = 169,025.51
  5. Step 5: Solve for x
    x = 169,025.51/407.00
  6. Step 6: Final answer
    x = 415.29

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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.