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Finding the Fourth Proportional to 617.77, 852.42 and 369.19

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Solution

The fourth proportional to 617.77, 852.42 and 369.19 is: 509.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    617.77 : 852.42 = 369.19 : x
  2. Step 2: Convert to fraction form
    617.77/852.42 = 369.19/x
  3. Step 3: Cross multiply
    617.77x = 852.42 × 369.19
  4. Step 4: Simplify right side
    617.77x = 314,704.94
  5. Step 5: Solve for x
    x = 314,704.94/617.77
  6. Step 6: Final answer
    x = 509.42

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