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Finding the Fourth Proportional to 581.85, 872.76 and 149

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Solution

The fourth proportional to 581.85, 872.76 and 149 is: 223.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    581.85 : 872.76 = 149 : x
  2. Step 2: Convert to fraction form
    581.85/872.76 = 149/x
  3. Step 3: Cross multiply
    581.85x = 872.76 × 149
  4. Step 4: Simplify right side
    581.85x = 130,041.24
  5. Step 5: Solve for x
    x = 130,041.24/581.85
  6. Step 6: Final answer
    x = 223.50

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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.