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Finding the Fourth Proportional to 1,757.28, 2,636.40 and 603.12

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Solution

The fourth proportional to 1,757.28, 2,636.40 and 603.12 is: 904.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,757.28 : 2,636.40 = 603.12 : x
  2. Step 2: Convert to fraction form
    1,757.28/2,636.40 = 603.12/x
  3. Step 3: Cross multiply
    1,757.28x = 2,636.40 × 603.12
  4. Step 4: Simplify right side
    1,757.28x = 1,590,065.57
  5. Step 5: Solve for x
    x = 1,590,065.57/1,757.28
  6. Step 6: Final answer
    x = 904.84

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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.