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Finding the Fourth Proportional to 1,060.34, 1,591.22 and 436.15

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Solution

The fourth proportional to 1,060.34, 1,591.22 and 436.15 is: 654.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,060.34 : 1,591.22 = 436.15 : x
  2. Step 2: Convert to fraction form
    1,060.34/1,591.22 = 436.15/x
  3. Step 3: Cross multiply
    1,060.34x = 1,591.22 × 436.15
  4. Step 4: Simplify right side
    1,060.34x = 694,008.42
  5. Step 5: Solve for x
    x = 694,008.42/1,060.34
  6. Step 6: Final answer
    x = 654.51

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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.