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Finding the Fourth Proportional to 1,632.50, 2,448.75 and 416.50

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Solution

The fourth proportional to 1,632.50, 2,448.75 and 416.50 is: 624.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,632.50 : 2,448.75 = 416.50 : x
  2. Step 2: Convert to fraction form
    1,632.50/2,448.75 = 416.50/x
  3. Step 3: Cross multiply
    1,632.50x = 2,448.75 × 416.50
  4. Step 4: Simplify right side
    1,632.50x = 1,019,904.38
  5. Step 5: Solve for x
    x = 1,019,904.38/1,632.50
  6. Step 6: Final answer
    x = 624.75

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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.