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Finding the Fourth Proportional to 268.32, 402.60 and 152.76

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Solution

The fourth proportional to 268.32, 402.60 and 152.76 is: 229.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    268.32 : 402.60 = 152.76 : x
  2. Step 2: Convert to fraction form
    268.32/402.60 = 152.76/x
  3. Step 3: Cross multiply
    268.32x = 402.60 × 152.76
  4. Step 4: Simplify right side
    268.32x = 61,501.18
  5. Step 5: Solve for x
    x = 61,501.18/268.32
  6. Step 6: Final answer
    x = 229.21

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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.