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Finding the Fourth Proportional to 617.27, 925.29 and 309.20

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Solution

The fourth proportional to 617.27, 925.29 and 309.20 is: 463.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    617.27 : 925.29 = 309.20 : x
  2. Step 2: Convert to fraction form
    617.27/925.29 = 309.20/x
  3. Step 3: Cross multiply
    617.27x = 925.29 × 309.20
  4. Step 4: Simplify right side
    617.27x = 286,095.04
  5. Step 5: Solve for x
    x = 286,095.04/617.27
  6. Step 6: Final answer
    x = 463.49

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.