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Finding the Fourth Proportional to 1,607.78, 2,410.70 and 669.59

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Solution

The fourth proportional to 1,607.78, 2,410.70 and 669.59 is: 1,003.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,607.78 : 2,410.70 = 669.59 : x
  2. Step 2: Convert to fraction form
    1,607.78/2,410.70 = 669.59/x
  3. Step 3: Cross multiply
    1,607.78x = 2,410.70 × 669.59
  4. Step 4: Simplify right side
    1,607.78x = 1,614,180.61
  5. Step 5: Solve for x
    x = 1,614,180.61/1,607.78
  6. Step 6: Final answer
    x = 1,003.98

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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.