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Finding the Fourth Proportional to 463.51, 639.64 and 267.01

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Solution

The fourth proportional to 463.51, 639.64 and 267.01 is: 368.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    463.51 : 639.64 = 267.01 : x
  2. Step 2: Convert to fraction form
    463.51/639.64 = 267.01/x
  3. Step 3: Cross multiply
    463.51x = 639.64 × 267.01
  4. Step 4: Simplify right side
    463.51x = 170,790.28
  5. Step 5: Solve for x
    x = 170,790.28/463.51
  6. Step 6: Final answer
    x = 368.47

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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.