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Finding the Fourth Proportional to 237.80, 328.40 and 192.98

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Solution

The fourth proportional to 237.80, 328.40 and 192.98 is: 266.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    237.80 : 328.40 = 192.98 : x
  2. Step 2: Convert to fraction form
    237.80/328.40 = 192.98/x
  3. Step 3: Cross multiply
    237.80x = 328.40 × 192.98
  4. Step 4: Simplify right side
    237.80x = 63,374.63
  5. Step 5: Solve for x
    x = 63,374.63/237.80
  6. Step 6: Final answer
    x = 266.50

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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.