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Finding the Fourth Proportional to 1,740.64, 2,609.30 and 644.71

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Solution

The fourth proportional to 1,740.64, 2,609.30 and 644.71 is: 966.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,740.64 : 2,609.30 = 644.71 : x
  2. Step 2: Convert to fraction form
    1,740.64/2,609.30 = 644.71/x
  3. Step 3: Cross multiply
    1,740.64x = 2,609.30 × 644.71
  4. Step 4: Simplify right side
    1,740.64x = 1,682,238.58
  5. Step 5: Solve for x
    x = 1,682,238.58/1,740.64
  6. Step 6: Final answer
    x = 966.45

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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.