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Finding the Fourth Proportional to 1,632.81, 2,448.36 and 707.88

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Solution

The fourth proportional to 1,632.81, 2,448.36 and 707.88 is: 1,061.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,632.81 : 2,448.36 = 707.88 : x
  2. Step 2: Convert to fraction form
    1,632.81/2,448.36 = 707.88/x
  3. Step 3: Cross multiply
    1,632.81x = 2,448.36 × 707.88
  4. Step 4: Simplify right side
    1,632.81x = 1,733,145.08
  5. Step 5: Solve for x
    x = 1,733,145.08/1,632.81
  6. Step 6: Final answer
    x = 1,061.45

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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.