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Finding the Fourth Proportional to 580.82, 870.90 and 436.23

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Solution

The fourth proportional to 580.82, 870.90 and 436.23 is: 654.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    580.82 : 870.90 = 436.23 : x
  2. Step 2: Convert to fraction form
    580.82/870.90 = 436.23/x
  3. Step 3: Cross multiply
    580.82x = 870.90 × 436.23
  4. Step 4: Simplify right side
    580.82x = 379,912.71
  5. Step 5: Solve for x
    x = 379,912.71/580.82
  6. Step 6: Final answer
    x = 654.10

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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.