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Finding the Fourth Proportional to 1,168.92, 1,750.62 and 648.16

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Solution

The fourth proportional to 1,168.92, 1,750.62 and 648.16 is: 970.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,168.92 : 1,750.62 = 648.16 : x
  2. Step 2: Convert to fraction form
    1,168.92/1,750.62 = 648.16/x
  3. Step 3: Cross multiply
    1,168.92x = 1,750.62 × 648.16
  4. Step 4: Simplify right side
    1,168.92x = 1,134,681.86
  5. Step 5: Solve for x
    x = 1,134,681.86/1,168.92
  6. Step 6: Final answer
    x = 970.71

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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.