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Finding the Fourth Proportional to 668.80, 923.35 and 529.48

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Solution

The fourth proportional to 668.80, 923.35 and 529.48 is: 731.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    668.80 : 923.35 = 529.48 : x
  2. Step 2: Convert to fraction form
    668.80/923.35 = 529.48/x
  3. Step 3: Cross multiply
    668.80x = 923.35 × 529.48
  4. Step 4: Simplify right side
    668.80x = 488,890.74
  5. Step 5: Solve for x
    x = 488,890.74/668.80
  6. Step 6: Final answer
    x = 731.00

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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.