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Finding the Fourth Proportional to 369.93, 555.30 and 153.66

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Solution

The fourth proportional to 369.93, 555.30 and 153.66 is: 230.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    369.93 : 555.30 = 153.66 : x
  2. Step 2: Convert to fraction form
    369.93/555.30 = 153.66/x
  3. Step 3: Cross multiply
    369.93x = 555.30 × 153.66
  4. Step 4: Simplify right side
    369.93x = 85,327.40
  5. Step 5: Solve for x
    x = 85,327.40/369.93
  6. Step 6: Final answer
    x = 230.66

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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.