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Finding the Fourth Proportional to 554.12, 831.18 and 362.12

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Solution

The fourth proportional to 554.12, 831.18 and 362.12 is: 543.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    554.12 : 831.18 = 362.12 : x
  2. Step 2: Convert to fraction form
    554.12/831.18 = 362.12/x
  3. Step 3: Cross multiply
    554.12x = 831.18 × 362.12
  4. Step 4: Simplify right side
    554.12x = 300,986.90
  5. Step 5: Solve for x
    x = 300,986.90/554.12
  6. Step 6: Final answer
    x = 543.18

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