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Finding the Fourth Proportional to 176.40, 242.82 and 152.76

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Solution

The fourth proportional to 176.40, 242.82 and 152.76 is: 210.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    176.40 : 242.82 = 152.76 : x
  2. Step 2: Convert to fraction form
    176.40/242.82 = 152.76/x
  3. Step 3: Cross multiply
    176.40x = 242.82 × 152.76
  4. Step 4: Simplify right side
    176.40x = 37,093.18
  5. Step 5: Solve for x
    x = 37,093.18/176.40
  6. Step 6: Final answer
    x = 210.28

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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.