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Finding the Fourth Proportional to 440.83, 660.93 and 286.93

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Solution

The fourth proportional to 440.83, 660.93 and 286.93 is: 430.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    440.83 : 660.93 = 286.93 : x
  2. Step 2: Convert to fraction form
    440.83/660.93 = 286.93/x
  3. Step 3: Cross multiply
    440.83x = 660.93 × 286.93
  4. Step 4: Simplify right side
    440.83x = 189,640.64
  5. Step 5: Solve for x
    x = 189,640.64/440.83
  6. Step 6: Final answer
    x = 430.19

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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.