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Finding the Fourth Proportional to 867.20, 1,197.72 and 632.19

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Solution

The fourth proportional to 867.20, 1,197.72 and 632.19 is: 873.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    867.20 : 1,197.72 = 632.19 : x
  2. Step 2: Convert to fraction form
    867.20/1,197.72 = 632.19/x
  3. Step 3: Cross multiply
    867.20x = 1,197.72 × 632.19
  4. Step 4: Simplify right side
    867.20x = 757,186.61
  5. Step 5: Solve for x
    x = 757,186.61/867.20
  6. Step 6: Final answer
    x = 873.14

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Half scale
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Double scale
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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.