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Finding the Fourth Proportional to 369.60, 554.42 and 95.70

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Solution

The fourth proportional to 369.60, 554.42 and 95.70 is: 143.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    369.60 : 554.42 = 95.70 : x
  2. Step 2: Convert to fraction form
    369.60/554.42 = 95.70/x
  3. Step 3: Cross multiply
    369.60x = 554.42 × 95.70
  4. Step 4: Simplify right side
    369.60x = 53,055.46
  5. Step 5: Solve for x
    x = 53,055.46/369.60
  6. Step 6: Final answer
    x = 143.55

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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.