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Finding the Fourth Proportional to 617.43, 926.15 and 360.75

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Solution

The fourth proportional to 617.43, 926.15 and 360.75 is: 541.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    617.43 : 926.15 = 360.75 : x
  2. Step 2: Convert to fraction form
    617.43/926.15 = 360.75/x
  3. Step 3: Cross multiply
    617.43x = 926.15 × 360.75
  4. Step 4: Simplify right side
    617.43x = 334,106.81
  5. Step 5: Solve for x
    x = 334,106.81/617.43
  6. Step 6: Final answer
    x = 541.13

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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.