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Finding the Fourth Proportional to 228.63, 315.45 and 151.02

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Solution

The fourth proportional to 228.63, 315.45 and 151.02 is: 208.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    228.63 : 315.45 = 151.02 : x
  2. Step 2: Convert to fraction form
    228.63/315.45 = 151.02/x
  3. Step 3: Cross multiply
    228.63x = 315.45 × 151.02
  4. Step 4: Simplify right side
    228.63x = 47,639.26
  5. Step 5: Solve for x
    x = 47,639.26/228.63
  6. Step 6: Final answer
    x = 208.37

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.