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Finding the Fourth Proportional to 1,660.47, 2,490 and 735.38

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Solution

The fourth proportional to 1,660.47, 2,490 and 735.38 is: 1,102.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,660.47 : 2,490 = 735.38 : x
  2. Step 2: Convert to fraction form
    1,660.47/2,490 = 735.38/x
  3. Step 3: Cross multiply
    1,660.47x = 2,490 × 735.38
  4. Step 4: Simplify right side
    1,660.47x = 1,831,083.75
  5. Step 5: Solve for x
    x = 1,831,083.75/1,660.47
  6. Step 6: Final answer
    x = 1,102.75

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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.