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Finding the Fourth Proportional to 268.31, 401.49 and 152.87

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Solution

The fourth proportional to 268.31, 401.49 and 152.87 is: 228.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    268.31 : 401.49 = 152.87 : x
  2. Step 2: Convert to fraction form
    268.31/401.49 = 152.87/x
  3. Step 3: Cross multiply
    268.31x = 401.49 × 152.87
  4. Step 4: Simplify right side
    268.31x = 61,373.77
  5. Step 5: Solve for x
    x = 61,373.77/268.31
  6. Step 6: Final answer
    x = 228.74

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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.