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Finding the Fourth Proportional to 581.56, 872.02 and 436.98

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Solution

The fourth proportional to 581.56, 872.02 and 436.98 is: 655.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    581.56 : 872.02 = 436.98 : x
  2. Step 2: Convert to fraction form
    581.56/872.02 = 436.98/x
  3. Step 3: Cross multiply
    581.56x = 872.02 × 436.98
  4. Step 4: Simplify right side
    581.56x = 381,055.30
  5. Step 5: Solve for x
    x = 381,055.30/581.56
  6. Step 6: Final answer
    x = 655.23

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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.