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Finding the Fourth Proportional to 1,672.55, 2,509.11 and 576.67

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Solution

The fourth proportional to 1,672.55, 2,509.11 and 576.67 is: 865.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,672.55 : 2,509.11 = 576.67 : x
  2. Step 2: Convert to fraction form
    1,672.55/2,509.11 = 576.67/x
  3. Step 3: Cross multiply
    1,672.55x = 2,509.11 × 576.67
  4. Step 4: Simplify right side
    1,672.55x = 1,446,922.19
  5. Step 5: Solve for x
    x = 1,446,922.19/1,672.55
  6. Step 6: Final answer
    x = 865.10

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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.