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Finding the Fourth Proportional to 1,705.54, 2,353.66 and 1,006.90

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Solution

The fourth proportional to 1,705.54, 2,353.66 and 1,006.90 is: 1,389.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,705.54 : 2,353.66 = 1,006.90 : x
  2. Step 2: Convert to fraction form
    1,705.54/2,353.66 = 1,006.90/x
  3. Step 3: Cross multiply
    1,705.54x = 2,353.66 × 1,006.90
  4. Step 4: Simplify right side
    1,705.54x = 2,369,900.25
  5. Step 5: Solve for x
    x = 2,369,900.25/1,705.54
  6. Step 6: Final answer
    x = 1,389.53

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.