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Finding the Fourth Proportional to 169.55, 253.08 and 146.47

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Solution

The fourth proportional to 169.55, 253.08 and 146.47 is: 218.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    169.55 : 253.08 = 146.47 : x
  2. Step 2: Convert to fraction form
    169.55/253.08 = 146.47/x
  3. Step 3: Cross multiply
    169.55x = 253.08 × 146.47
  4. Step 4: Simplify right side
    169.55x = 37,068.63
  5. Step 5: Solve for x
    x = 37,068.63/169.55
  6. Step 6: Final answer
    x = 218.63

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.