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Finding the Fourth Proportional to 617.19, 925.70 and 206.32

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Solution

The fourth proportional to 617.19, 925.70 and 206.32 is: 309.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    617.19 : 925.70 = 206.32 : x
  2. Step 2: Convert to fraction form
    617.19/925.70 = 206.32/x
  3. Step 3: Cross multiply
    617.19x = 925.70 × 206.32
  4. Step 4: Simplify right side
    617.19x = 190,986.69
  5. Step 5: Solve for x
    x = 190,986.69/617.19
  6. Step 6: Final answer
    x = 309.45

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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.