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Finding the Fourth Proportional to 463.81, 640.10 and 253.99

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Solution

The fourth proportional to 463.81, 640.10 and 253.99 is: 350.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    463.81 : 640.10 = 253.99 : x
  2. Step 2: Convert to fraction form
    463.81/640.10 = 253.99/x
  3. Step 3: Cross multiply
    463.81x = 640.10 × 253.99
  4. Step 4: Simplify right side
    463.81x = 162,579.00
  5. Step 5: Solve for x
    x = 162,579.00/463.81
  6. Step 6: Final answer
    x = 350.53

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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.