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Finding the Fourth Proportional to 245.61, 340.71 and 236.70

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Solution

The fourth proportional to 245.61, 340.71 and 236.70 is: 328.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    245.61 : 340.71 = 236.70 : x
  2. Step 2: Convert to fraction form
    245.61/340.71 = 236.70/x
  3. Step 3: Cross multiply
    245.61x = 340.71 × 236.70
  4. Step 4: Simplify right side
    245.61x = 80,646.06
  5. Step 5: Solve for x
    x = 80,646.06/245.61
  6. Step 6: Final answer
    x = 328.35

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.