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Finding the Fourth Proportional to 225.04, 310.40 and 151.32

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Solution

The fourth proportional to 225.04, 310.40 and 151.32 is: 208.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    225.04 : 310.40 = 151.32 : x
  2. Step 2: Convert to fraction form
    225.04/310.40 = 151.32/x
  3. Step 3: Cross multiply
    225.04x = 310.40 × 151.32
  4. Step 4: Simplify right side
    225.04x = 46,969.73
  5. Step 5: Solve for x
    x = 46,969.73/225.04
  6. Step 6: Final answer
    x = 208.72

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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.