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Finding the Fourth Proportional to 603.43, 905.15 and 346.75

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Solution

The fourth proportional to 603.43, 905.15 and 346.75 is: 520.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    603.43 : 905.15 = 346.75 : x
  2. Step 2: Convert to fraction form
    603.43/905.15 = 346.75/x
  3. Step 3: Cross multiply
    603.43x = 905.15 × 346.75
  4. Step 4: Simplify right side
    603.43x = 313,860.76
  5. Step 5: Solve for x
    x = 313,860.76/603.43
  6. Step 6: Final answer
    x = 520.13

Related Problems

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Half scale
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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.