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Finding the Fourth Proportional to 1,065.71, 1,600.05 and 846.47

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Solution

The fourth proportional to 1,065.71, 1,600.05 and 846.47 is: 1,270.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,065.71 : 1,600.05 = 846.47 : x
  2. Step 2: Convert to fraction form
    1,065.71/1,600.05 = 846.47/x
  3. Step 3: Cross multiply
    1,065.71x = 1,600.05 × 846.47
  4. Step 4: Simplify right side
    1,065.71x = 1,354,394.32
  5. Step 5: Solve for x
    x = 1,354,394.32/1,065.71
  6. Step 6: Final answer
    x = 1,270.88

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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.