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Finding the Fourth Proportional to 867.12, 1,196.59 and 474.16

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Solution

The fourth proportional to 867.12, 1,196.59 and 474.16 is: 654.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    867.12 : 1,196.59 = 474.16 : x
  2. Step 2: Convert to fraction form
    867.12/1,196.59 = 474.16/x
  3. Step 3: Cross multiply
    867.12x = 1,196.59 × 474.16
  4. Step 4: Simplify right side
    867.12x = 567,375.11
  5. Step 5: Solve for x
    x = 567,375.11/867.12
  6. Step 6: Final answer
    x = 654.32

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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.