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Finding the Third Proportional to 405.79 and 602.28

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Solution

The third proportional to 405.79 and 602.28 is: 893.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    405.79 : 602.28 = 602.28 : x
  2. Step 2: Convert to fraction form
    405.79/602.28 = 602.28/x
  3. Step 3: Cross multiply
    405.79x = 602.28 × 602.28
  4. Step 4: Simplify right side
    405.79x = 362,740.35
  5. Step 5: Solve for x
    x = 362,740.35/405.79
  6. Step 6: Final answer
    x = 893.91

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Why These Related Problems?

These problems maintain the same ratio (1.48) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.