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Finding the Fourth Proportional to 2,154.76, 3,232.18 and 615.76

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Solution

The fourth proportional to 2,154.76, 3,232.18 and 615.76 is: 923.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,154.76 : 3,232.18 = 615.76 : x
  2. Step 2: Convert to fraction form
    2,154.76/3,232.18 = 615.76/x
  3. Step 3: Cross multiply
    2,154.76x = 3,232.18 × 615.76
  4. Step 4: Simplify right side
    2,154.76x = 1,990,247.16
  5. Step 5: Solve for x
    x = 1,990,247.16/2,154.76
  6. Step 6: Final answer
    x = 923.65

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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.