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Finding the Fourth Proportional to 1,711.50, 2,567.24 and 615.86

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Solution

The fourth proportional to 1,711.50, 2,567.24 and 615.86 is: 923.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,711.50 : 2,567.24 = 615.86 : x
  2. Step 2: Convert to fraction form
    1,711.50/2,567.24 = 615.86/x
  3. Step 3: Cross multiply
    1,711.50x = 2,567.24 × 615.86
  4. Step 4: Simplify right side
    1,711.50x = 1,581,050.93
  5. Step 5: Solve for x
    x = 1,581,050.93/1,711.50
  6. Step 6: Final answer
    x = 923.78

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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.