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Finding the Fourth Proportional to 218.46, 301.31 and 152.98

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Solution

The fourth proportional to 218.46, 301.31 and 152.98 is: 211.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    218.46 : 301.31 = 152.98 : x
  2. Step 2: Convert to fraction form
    218.46/301.31 = 152.98/x
  3. Step 3: Cross multiply
    218.46x = 301.31 × 152.98
  4. Step 4: Simplify right side
    218.46x = 46,094.40
  5. Step 5: Solve for x
    x = 46,094.40/218.46
  6. Step 6: Final answer
    x = 211.00

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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.