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Finding the Fourth Proportional to 514.03, 709.20 and 304.28

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Solution

The fourth proportional to 514.03, 709.20 and 304.28 is: 419.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    514.03 : 709.20 = 304.28 : x
  2. Step 2: Convert to fraction form
    514.03/709.20 = 304.28/x
  3. Step 3: Cross multiply
    514.03x = 709.20 × 304.28
  4. Step 4: Simplify right side
    514.03x = 215,795.38
  5. Step 5: Solve for x
    x = 215,795.38/514.03
  6. Step 6: Final answer
    x = 419.81

Related Problems

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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.