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Finding the Fourth Proportional to 652.28, 900.06 and 419.72

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Solution

The fourth proportional to 652.28, 900.06 and 419.72 is: 579.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    652.28 : 900.06 = 419.72 : x
  2. Step 2: Convert to fraction form
    652.28/900.06 = 419.72/x
  3. Step 3: Cross multiply
    652.28x = 900.06 × 419.72
  4. Step 4: Simplify right side
    652.28x = 377,773.18
  5. Step 5: Solve for x
    x = 377,773.18/652.28
  6. Step 6: Final answer
    x = 579.16

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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.