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Finding the Fourth Proportional to 651.92, 899.64 and 353.17

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Solution

The fourth proportional to 651.92, 899.64 and 353.17 is: 487.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    651.92 : 899.64 = 353.17 : x
  2. Step 2: Convert to fraction form
    651.92/899.64 = 353.17/x
  3. Step 3: Cross multiply
    651.92x = 899.64 × 353.17
  4. Step 4: Simplify right side
    651.92x = 317,721.36
  5. Step 5: Solve for x
    x = 317,721.36/651.92
  6. Step 6: Final answer
    x = 487.37

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Double scale
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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.