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Finding the Fourth Proportional to 463.55, 639.47 and 295.58

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Solution

The fourth proportional to 463.55, 639.47 and 295.58 is: 407.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    463.55 : 639.47 = 295.58 : x
  2. Step 2: Convert to fraction form
    463.55/639.47 = 295.58/x
  3. Step 3: Cross multiply
    463.55x = 639.47 × 295.58
  4. Step 4: Simplify right side
    463.55x = 189,009.87
  5. Step 5: Solve for x
    x = 189,009.87/463.55
  6. Step 6: Final answer
    x = 407.75

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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.