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Finding the Fourth Proportional to 1,365.13, 2,047.90 and 440.52

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Solution

The fourth proportional to 1,365.13, 2,047.90 and 440.52 is: 660.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,365.13 : 2,047.90 = 440.52 : x
  2. Step 2: Convert to fraction form
    1,365.13/2,047.90 = 440.52/x
  3. Step 3: Cross multiply
    1,365.13x = 2,047.90 × 440.52
  4. Step 4: Simplify right side
    1,365.13x = 902,132.95
  5. Step 5: Solve for x
    x = 902,132.95/1,365.13
  6. Step 6: Final answer
    x = 660.84

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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.