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Finding the Fourth Proportional to 266.93, 368.53 and 172.56

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Solution

The fourth proportional to 266.93, 368.53 and 172.56 is: 238.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    266.93 : 368.53 = 172.56 : x
  2. Step 2: Convert to fraction form
    266.93/368.53 = 172.56/x
  3. Step 3: Cross multiply
    266.93x = 368.53 × 172.56
  4. Step 4: Simplify right side
    266.93x = 63,594.49
  5. Step 5: Solve for x
    x = 63,594.49/266.93
  6. Step 6: Final answer
    x = 238.25

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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.