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Finding the Fourth Proportional to 638.01, 880.47 and 358.24

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Solution

The fourth proportional to 638.01, 880.47 and 358.24 is: 494.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    638.01 : 880.47 = 358.24 : x
  2. Step 2: Convert to fraction form
    638.01/880.47 = 358.24/x
  3. Step 3: Cross multiply
    638.01x = 880.47 × 358.24
  4. Step 4: Simplify right side
    638.01x = 315,419.57
  5. Step 5: Solve for x
    x = 315,419.57/638.01
  6. Step 6: Final answer
    x = 494.38

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1.5x scale

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.