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Finding the Fourth Proportional to 1,632.48, 2,448.80 and 658.72

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Solution

The fourth proportional to 1,632.48, 2,448.80 and 658.72 is: 988.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,632.48 : 2,448.80 = 658.72 : x
  2. Step 2: Convert to fraction form
    1,632.48/2,448.80 = 658.72/x
  3. Step 3: Cross multiply
    1,632.48x = 2,448.80 × 658.72
  4. Step 4: Simplify right side
    1,632.48x = 1,613,073.54
  5. Step 5: Solve for x
    x = 1,613,073.54/1,632.48
  6. Step 6: Final answer
    x = 988.11

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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.