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Finding the Fourth Proportional to 268.82, 370.98 and 152.40

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Solution

The fourth proportional to 268.82, 370.98 and 152.40 is: 210.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    268.82 : 370.98 = 152.40 : x
  2. Step 2: Convert to fraction form
    268.82/370.98 = 152.40/x
  3. Step 3: Cross multiply
    268.82x = 370.98 × 152.40
  4. Step 4: Simplify right side
    268.82x = 56,537.35
  5. Step 5: Solve for x
    x = 56,537.35/268.82
  6. Step 6: Final answer
    x = 210.32

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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.