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Finding the Fourth Proportional to 440.60, 660.90 and 368.60

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Solution

The fourth proportional to 440.60, 660.90 and 368.60 is: 552.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    440.60 : 660.90 = 368.60 : x
  2. Step 2: Convert to fraction form
    440.60/660.90 = 368.60/x
  3. Step 3: Cross multiply
    440.60x = 660.90 × 368.60
  4. Step 4: Simplify right side
    440.60x = 243,607.74
  5. Step 5: Solve for x
    x = 243,607.74/440.60
  6. Step 6: Final answer
    x = 552.90

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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.