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Finding the Fourth Proportional to 178.04, 266.89 and 56.28

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Solution

The fourth proportional to 178.04, 266.89 and 56.28 is: 84.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    178.04 : 266.89 = 56.28 : x
  2. Step 2: Convert to fraction form
    178.04/266.89 = 56.28/x
  3. Step 3: Cross multiply
    178.04x = 266.89 × 56.28
  4. Step 4: Simplify right side
    178.04x = 15,019.23
  5. Step 5: Solve for x
    x = 15,019.23/178.04
  6. Step 6: Final answer
    x = 84.36

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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.