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Finding the Fourth Proportional to 1,711.45, 2,567.14 and 557.20

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Solution

The fourth proportional to 1,711.45, 2,567.14 and 557.20 is: 835.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,711.45 : 2,567.14 = 557.20 : x
  2. Step 2: Convert to fraction form
    1,711.45/2,567.14 = 557.20/x
  3. Step 3: Cross multiply
    1,711.45x = 2,567.14 × 557.20
  4. Step 4: Simplify right side
    1,711.45x = 1,430,410.41
  5. Step 5: Solve for x
    x = 1,430,410.41/1,711.45
  6. Step 6: Final answer
    x = 835.79

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1.5x scale

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.