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Finding the Fourth Proportional to 266.90, 368.32 and 148.87

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Solution

The fourth proportional to 266.90, 368.32 and 148.87 is: 205.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    266.90 : 368.32 = 148.87 : x
  2. Step 2: Convert to fraction form
    266.90/368.32 = 148.87/x
  3. Step 3: Cross multiply
    266.90x = 368.32 × 148.87
  4. Step 4: Simplify right side
    266.90x = 54,832.17
  5. Step 5: Solve for x
    x = 54,832.17/266.90
  6. Step 6: Final answer
    x = 205.44

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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.