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Finding the Fourth Proportional to 1,992.74, 2,989.14 and 532.10

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Solution

The fourth proportional to 1,992.74, 2,989.14 and 532.10 is: 798.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,992.74 : 2,989.14 = 532.10 : x
  2. Step 2: Convert to fraction form
    1,992.74/2,989.14 = 532.10/x
  3. Step 3: Cross multiply
    1,992.74x = 2,989.14 × 532.10
  4. Step 4: Simplify right side
    1,992.74x = 1,590,521.39
  5. Step 5: Solve for x
    x = 1,590,521.39/1,992.74
  6. Step 6: Final answer
    x = 798.16

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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.