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Finding the Fourth Proportional to 1,630, 2,448.63 and 981.19

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Solution

The fourth proportional to 1,630, 2,448.63 and 981.19 is: 1,473.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,630 : 2,448.63 = 981.19 : x
  2. Step 2: Convert to fraction form
    1,630/2,448.63 = 981.19/x
  3. Step 3: Cross multiply
    1,630x = 2,448.63 × 981.19
  4. Step 4: Simplify right side
    1,630x = 2,402,571.27
  5. Step 5: Solve for x
    x = 2,402,571.27/1,630
  6. Step 6: Final answer
    x = 1,473.97

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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.