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Finding the Fourth Proportional to 982.51, 1,356.22 and 651.04

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Solution

The fourth proportional to 982.51, 1,356.22 and 651.04 is: 898.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    982.51 : 1,356.22 = 651.04 : x
  2. Step 2: Convert to fraction form
    982.51/1,356.22 = 651.04/x
  3. Step 3: Cross multiply
    982.51x = 1,356.22 × 651.04
  4. Step 4: Simplify right side
    982.51x = 882,953.47
  5. Step 5: Solve for x
    x = 882,953.47/982.51
  6. Step 6: Final answer
    x = 898.68

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.