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Finding the Fourth Proportional to 1,064.76, 1,594.38 and 999.90

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Solution

The fourth proportional to 1,064.76, 1,594.38 and 999.90 is: 1,497.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,064.76 : 1,594.38 = 999.90 : x
  2. Step 2: Convert to fraction form
    1,064.76/1,594.38 = 999.90/x
  3. Step 3: Cross multiply
    1,064.76x = 1,594.38 × 999.90
  4. Step 4: Simplify right side
    1,064.76x = 1,594,220.56
  5. Step 5: Solve for x
    x = 1,594,220.56/1,064.76
  6. Step 6: Final answer
    x = 1,497.26

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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.