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Finding the Fourth Proportional to 286.86, 430.58 and 150.02

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Solution

The fourth proportional to 286.86, 430.58 and 150.02 is: 225.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    286.86 : 430.58 = 150.02 : x
  2. Step 2: Convert to fraction form
    286.86/430.58 = 150.02/x
  3. Step 3: Cross multiply
    286.86x = 430.58 × 150.02
  4. Step 4: Simplify right side
    286.86x = 64,595.61
  5. Step 5: Solve for x
    x = 64,595.61/286.86
  6. Step 6: Final answer
    x = 225.18

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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.