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Finding the Fourth Proportional to 617.47, 926.20 and 480.13

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Solution

The fourth proportional to 617.47, 926.20 and 480.13 is: 720.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    617.47 : 926.20 = 480.13 : x
  2. Step 2: Convert to fraction form
    617.47/926.20 = 480.13/x
  3. Step 3: Cross multiply
    617.47x = 926.20 × 480.13
  4. Step 4: Simplify right side
    617.47x = 444,694.69
  5. Step 5: Solve for x
    x = 444,694.69/617.47
  6. Step 6: Final answer
    x = 720.19

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.