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Finding the Fourth Proportional to 1,101.33, 1,649.67 and 753.03

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Solution

The fourth proportional to 1,101.33, 1,649.67 and 753.03 is: 1,127.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,101.33 : 1,649.67 = 753.03 : x
  2. Step 2: Convert to fraction form
    1,101.33/1,649.67 = 753.03/x
  3. Step 3: Cross multiply
    1,101.33x = 1,649.67 × 753.03
  4. Step 4: Simplify right side
    1,101.33x = 1,242,248.18
  5. Step 5: Solve for x
    x = 1,242,248.18/1,101.33
  6. Step 6: Final answer
    x = 1,127.95

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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.