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Finding the Fourth Proportional to 1,740.16, 2,608.48 and 644.32

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Solution

The fourth proportional to 1,740.16, 2,608.48 and 644.32 is: 965.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,740.16 : 2,608.48 = 644.32 : x
  2. Step 2: Convert to fraction form
    1,740.16/2,608.48 = 644.32/x
  3. Step 3: Cross multiply
    1,740.16x = 2,608.48 × 644.32
  4. Step 4: Simplify right side
    1,740.16x = 1,680,695.83
  5. Step 5: Solve for x
    x = 1,680,695.83/1,740.16
  6. Step 6: Final answer
    x = 965.83

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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.