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Finding the Fourth Proportional to 1,494.88, 2,242.68 and 521.08

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Solution

The fourth proportional to 1,494.88, 2,242.68 and 521.08 is: 781.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,494.88 : 2,242.68 = 521.08 : x
  2. Step 2: Convert to fraction form
    1,494.88/2,242.68 = 521.08/x
  3. Step 3: Cross multiply
    1,494.88x = 2,242.68 × 521.08
  4. Step 4: Simplify right side
    1,494.88x = 1,168,615.69
  5. Step 5: Solve for x
    x = 1,168,615.69/1,494.88
  6. Step 6: Final answer
    x = 781.75

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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.