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Finding the Fourth Proportional to 846.82, 1,270.50 and 436.24

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Solution

The fourth proportional to 846.82, 1,270.50 and 436.24 is: 654.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    846.82 : 1,270.50 = 436.24 : x
  2. Step 2: Convert to fraction form
    846.82/1,270.50 = 436.24/x
  3. Step 3: Cross multiply
    846.82x = 1,270.50 × 436.24
  4. Step 4: Simplify right side
    846.82x = 554,242.92
  5. Step 5: Solve for x
    x = 554,242.92/846.82
  6. Step 6: Final answer
    x = 654.50

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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.