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Finding the Fourth Proportional to 500.96, 690.03 and 353.34

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Solution

The fourth proportional to 500.96, 690.03 and 353.34 is: 486.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    500.96 : 690.03 = 353.34 : x
  2. Step 2: Convert to fraction form
    500.96/690.03 = 353.34/x
  3. Step 3: Cross multiply
    500.96x = 690.03 × 353.34
  4. Step 4: Simplify right side
    500.96x = 243,815.20
  5. Step 5: Solve for x
    x = 243,815.20/500.96
  6. Step 6: Final answer
    x = 486.69

Related Problems

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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.