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Finding the Fourth Proportional to 240.55, 358.37 and 228.70

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Solution

The fourth proportional to 240.55, 358.37 and 228.70 is: 340.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    240.55 : 358.37 = 228.70 : x
  2. Step 2: Convert to fraction form
    240.55/358.37 = 228.70/x
  3. Step 3: Cross multiply
    240.55x = 358.37 × 228.70
  4. Step 4: Simplify right side
    240.55x = 81,959.22
  5. Step 5: Solve for x
    x = 81,959.22/240.55
  6. Step 6: Final answer
    x = 340.72

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.