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Finding the Fourth Proportional to 1,001.21, 1,501.82 and 562.20

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Solution

The fourth proportional to 1,001.21, 1,501.82 and 562.20 is: 843.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,001.21 : 1,501.82 = 562.20 : x
  2. Step 2: Convert to fraction form
    1,001.21/1,501.82 = 562.20/x
  3. Step 3: Cross multiply
    1,001.21x = 1,501.82 × 562.20
  4. Step 4: Simplify right side
    1,001.21x = 844,320.39
  5. Step 5: Solve for x
    x = 844,320.39/1,001.21
  6. Step 6: Final answer
    x = 843.30

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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.