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Finding the Fourth Proportional to 1,164.92, 1,607.60 and 716.66

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Solution

The fourth proportional to 1,164.92, 1,607.60 and 716.66 is: 989.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,164.92 : 1,607.60 = 716.66 : x
  2. Step 2: Convert to fraction form
    1,164.92/1,607.60 = 716.66/x
  3. Step 3: Cross multiply
    1,164.92x = 1,607.60 × 716.66
  4. Step 4: Simplify right side
    1,164.92x = 1,152,102.62
  5. Step 5: Solve for x
    x = 1,152,102.62/1,164.92
  6. Step 6: Final answer
    x = 989.00

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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.