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Finding the Fourth Proportional to 668.64, 998.64 and 560.52

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Solution

The fourth proportional to 668.64, 998.64 and 560.52 is: 837.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    668.64 : 998.64 = 560.52 : x
  2. Step 2: Convert to fraction form
    668.64/998.64 = 560.52/x
  3. Step 3: Cross multiply
    668.64x = 998.64 × 560.52
  4. Step 4: Simplify right side
    668.64x = 559,757.69
  5. Step 5: Solve for x
    x = 559,757.69/668.64
  6. Step 6: Final answer
    x = 837.16

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.