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Finding the Fourth Proportional to 1,365.57, 2,047.91 and 440.93

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Solution

The fourth proportional to 1,365.57, 2,047.91 and 440.93 is: 661.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,365.57 : 2,047.91 = 440.93 : x
  2. Step 2: Convert to fraction form
    1,365.57/2,047.91 = 440.93/x
  3. Step 3: Cross multiply
    1,365.57x = 2,047.91 × 440.93
  4. Step 4: Simplify right side
    1,365.57x = 902,974.72
  5. Step 5: Solve for x
    x = 902,974.72/1,365.57
  6. Step 6: Final answer
    x = 661.25

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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.