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Finding the Fourth Proportional to 286.64, 430.20 and 150.08

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Solution

The fourth proportional to 286.64, 430.20 and 150.08 is: 225.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    286.64 : 430.20 = 150.08 : x
  2. Step 2: Convert to fraction form
    286.64/430.20 = 150.08/x
  3. Step 3: Cross multiply
    286.64x = 430.20 × 150.08
  4. Step 4: Simplify right side
    286.64x = 64,564.42
  5. Step 5: Solve for x
    x = 64,564.42/286.64
  6. Step 6: Final answer
    x = 225.25

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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.