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Finding the Fourth Proportional to 554.64, 831.36 and 349.32

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Solution

The fourth proportional to 554.64, 831.36 and 349.32 is: 523.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    554.64 : 831.36 = 349.32 : x
  2. Step 2: Convert to fraction form
    554.64/831.36 = 349.32/x
  3. Step 3: Cross multiply
    554.64x = 831.36 × 349.32
  4. Step 4: Simplify right side
    554.64x = 290,410.68
  5. Step 5: Solve for x
    x = 290,410.68/554.64
  6. Step 6: Final answer
    x = 523.60

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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.