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Finding the Fourth Proportional to 668.14, 921.63 and 432.01

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Solution

The fourth proportional to 668.14, 921.63 and 432.01 is: 595.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    668.14 : 921.63 = 432.01 : x
  2. Step 2: Convert to fraction form
    668.14/921.63 = 432.01/x
  3. Step 3: Cross multiply
    668.14x = 921.63 × 432.01
  4. Step 4: Simplify right side
    668.14x = 398,151.07
  5. Step 5: Solve for x
    x = 398,151.07/668.14
  6. Step 6: Final answer
    x = 595.91

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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.