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Finding the Fourth Proportional to 1,664.65, 2,497.56 and 740.12

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Solution

The fourth proportional to 1,664.65, 2,497.56 and 740.12 is: 1,110.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,664.65 : 2,497.56 = 740.12 : x
  2. Step 2: Convert to fraction form
    1,664.65/2,497.56 = 740.12/x
  3. Step 3: Cross multiply
    1,664.65x = 2,497.56 × 740.12
  4. Step 4: Simplify right side
    1,664.65x = 1,848,494.97
  5. Step 5: Solve for x
    x = 1,848,494.97/1,664.65
  6. Step 6: Final answer
    x = 1,110.44

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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.