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Finding the Fourth Proportional to 215.61, 297.53 and 132.68

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Solution

The fourth proportional to 215.61, 297.53 and 132.68 is: 183.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    215.61 : 297.53 = 132.68 : x
  2. Step 2: Convert to fraction form
    215.61/297.53 = 132.68/x
  3. Step 3: Cross multiply
    215.61x = 297.53 × 132.68
  4. Step 4: Simplify right side
    215.61x = 39,477.36
  5. Step 5: Solve for x
    x = 39,477.36/215.61
  6. Step 6: Final answer
    x = 183.10

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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.