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Finding the Fourth Proportional to 1,360.81, 2,041.36 and 436.04

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Solution

The fourth proportional to 1,360.81, 2,041.36 and 436.04 is: 654.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,360.81 : 2,041.36 = 436.04 : x
  2. Step 2: Convert to fraction form
    1,360.81/2,041.36 = 436.04/x
  3. Step 3: Cross multiply
    1,360.81x = 2,041.36 × 436.04
  4. Step 4: Simplify right side
    1,360.81x = 890,114.61
  5. Step 5: Solve for x
    x = 890,114.61/1,360.81
  6. Step 6: Final answer
    x = 654.11

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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.