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Finding the Fourth Proportional to 653.72, 902.10 and 358.96

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Solution

The fourth proportional to 653.72, 902.10 and 358.96 is: 495.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    653.72 : 902.10 = 358.96 : x
  2. Step 2: Convert to fraction form
    653.72/902.10 = 358.96/x
  3. Step 3: Cross multiply
    653.72x = 902.10 × 358.96
  4. Step 4: Simplify right side
    653.72x = 323,819.62
  5. Step 5: Solve for x
    x = 323,819.62/653.72
  6. Step 6: Final answer
    x = 495.35

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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.