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Finding the Fourth Proportional to 1,602.79, 2,404.67 and 872.98

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Solution

The fourth proportional to 1,602.79, 2,404.67 and 872.98 is: 1,309.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,602.79 : 2,404.67 = 872.98 : x
  2. Step 2: Convert to fraction form
    1,602.79/2,404.67 = 872.98/x
  3. Step 3: Cross multiply
    1,602.79x = 2,404.67 × 872.98
  4. Step 4: Simplify right side
    1,602.79x = 2,099,228.82
  5. Step 5: Solve for x
    x = 2,099,228.82/1,602.79
  6. Step 6: Final answer
    x = 1,309.73

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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.