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Finding the Fourth Proportional to 641.10, 961.64 and 367.00

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Solution

The fourth proportional to 641.10, 961.64 and 367.00 is: 550.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    641.10 : 961.64 = 367.00 : x
  2. Step 2: Convert to fraction form
    641.10/961.64 = 367.00/x
  3. Step 3: Cross multiply
    641.10x = 961.64 × 367.00
  4. Step 4: Simplify right side
    641.10x = 352,919.19
  5. Step 5: Solve for x
    x = 352,919.19/641.10
  6. Step 6: Final answer
    x = 550.49

Related Problems

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Half scale
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Double scale
Find fourth proportional to 642.10, 963.14 and 368
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.