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Finding the Fourth Proportional to 554.16, 831.28 and 446.56

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Solution

The fourth proportional to 554.16, 831.28 and 446.56 is: 669.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    554.16 : 831.28 = 446.56 : x
  2. Step 2: Convert to fraction form
    554.16/831.28 = 446.56/x
  3. Step 3: Cross multiply
    554.16x = 831.28 × 446.56
  4. Step 4: Simplify right side
    554.16x = 371,216.40
  5. Step 5: Solve for x
    x = 371,216.40/554.16
  6. Step 6: Final answer
    x = 669.87

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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.