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Finding the Fourth Proportional to 342.50, 472.65 and 187.25

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Solution

The fourth proportional to 342.50, 472.65 and 187.25 is: 258.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    342.50 : 472.65 = 187.25 : x
  2. Step 2: Convert to fraction form
    342.50/472.65 = 187.25/x
  3. Step 3: Cross multiply
    342.50x = 472.65 × 187.25
  4. Step 4: Simplify right side
    342.50x = 88,503.71
  5. Step 5: Solve for x
    x = 88,503.71/342.50
  6. Step 6: Final answer
    x = 258.41

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