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Finding the Fourth Proportional to 2,390.33, 3,585.50 and 659.09

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Solution

The fourth proportional to 2,390.33, 3,585.50 and 659.09 is: 988.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,390.33 : 3,585.50 = 659.09 : x
  2. Step 2: Convert to fraction form
    2,390.33/3,585.50 = 659.09/x
  3. Step 3: Cross multiply
    2,390.33x = 3,585.50 × 659.09
  4. Step 4: Simplify right side
    2,390.33x = 2,363,167.20
  5. Step 5: Solve for x
    x = 2,363,167.20/2,390.33
  6. Step 6: Final answer
    x = 988.64

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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.