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Finding the Fourth Proportional to 554.55, 831.82 and 325.06

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Solution

The fourth proportional to 554.55, 831.82 and 325.06 is: 487.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    554.55 : 831.82 = 325.06 : x
  2. Step 2: Convert to fraction form
    554.55/831.82 = 325.06/x
  3. Step 3: Cross multiply
    554.55x = 831.82 × 325.06
  4. Step 4: Simplify right side
    554.55x = 270,393.81
  5. Step 5: Solve for x
    x = 270,393.81/554.55
  6. Step 6: Final answer
    x = 487.59

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Double scale
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Similar ratio
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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.