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Finding the Fourth Proportional to 668.03, 921.87 and 373.32

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Solution

The fourth proportional to 668.03, 921.87 and 373.32 is: 515.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    668.03 : 921.87 = 373.32 : x
  2. Step 2: Convert to fraction form
    668.03/921.87 = 373.32/x
  3. Step 3: Cross multiply
    668.03x = 921.87 × 373.32
  4. Step 4: Simplify right side
    668.03x = 344,152.51
  5. Step 5: Solve for x
    x = 344,152.51/668.03
  6. Step 6: Final answer
    x = 515.18

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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.