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Finding the Fourth Proportional to 332.49, 498.78 and 127.08

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Solution

The fourth proportional to 332.49, 498.78 and 127.08 is: 190.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    332.49 : 498.78 = 127.08 : x
  2. Step 2: Convert to fraction form
    332.49/498.78 = 127.08/x
  3. Step 3: Cross multiply
    332.49x = 498.78 × 127.08
  4. Step 4: Simplify right side
    332.49x = 63,384.96
  5. Step 5: Solve for x
    x = 63,384.96/332.49
  6. Step 6: Final answer
    x = 190.64

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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.