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Finding the Fourth Proportional to 1,110.30, 1,532.16 and 716.64

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Solution

The fourth proportional to 1,110.30, 1,532.16 and 716.64 is: 988.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,110.30 : 1,532.16 = 716.64 : x
  2. Step 2: Convert to fraction form
    1,110.30/1,532.16 = 716.64/x
  3. Step 3: Cross multiply
    1,110.30x = 1,532.16 × 716.64
  4. Step 4: Simplify right side
    1,110.30x = 1,098,007.14
  5. Step 5: Solve for x
    x = 1,098,007.14/1,110.30
  6. Step 6: Final answer
    x = 988.93

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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.