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Finding the Fourth Proportional to 245.88, 368.74 and 72.50

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Solution

The fourth proportional to 245.88, 368.74 and 72.50 is: 108.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    245.88 : 368.74 = 72.50 : x
  2. Step 2: Convert to fraction form
    245.88/368.74 = 72.50/x
  3. Step 3: Cross multiply
    245.88x = 368.74 × 72.50
  4. Step 4: Simplify right side
    245.88x = 26,732.37
  5. Step 5: Solve for x
    x = 26,732.37/245.88
  6. Step 6: Final answer
    x = 108.72

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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.