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Finding the Fourth Proportional to 1,701.40, 2,551.20 and 605.60

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Solution

The fourth proportional to 1,701.40, 2,551.20 and 605.60 is: 908.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,701.40 : 2,551.20 = 605.60 : x
  2. Step 2: Convert to fraction form
    1,701.40/2,551.20 = 605.60/x
  3. Step 3: Cross multiply
    1,701.40x = 2,551.20 × 605.60
  4. Step 4: Simplify right side
    1,701.40x = 1,545,006.72
  5. Step 5: Solve for x
    x = 1,545,006.72/1,701.40
  6. Step 6: Final answer
    x = 908.08

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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.