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Finding the Fourth Proportional to 1,062.08, 1,596.78 and 981.90

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Solution

The fourth proportional to 1,062.08, 1,596.78 and 981.90 is: 1,476.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,062.08 : 1,596.78 = 981.90 : x
  2. Step 2: Convert to fraction form
    1,062.08/1,596.78 = 981.90/x
  3. Step 3: Cross multiply
    1,062.08x = 1,596.78 × 981.90
  4. Step 4: Simplify right side
    1,062.08x = 1,567,878.28
  5. Step 5: Solve for x
    x = 1,567,878.28/1,062.08
  6. Step 6: Final answer
    x = 1,476.23

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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.