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Finding the Fourth Proportional to 369.87, 555.56 and 283.60

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Solution

The fourth proportional to 369.87, 555.56 and 283.60 is: 425.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    369.87 : 555.56 = 283.60 : x
  2. Step 2: Convert to fraction form
    369.87/555.56 = 283.60/x
  3. Step 3: Cross multiply
    369.87x = 555.56 × 283.60
  4. Step 4: Simplify right side
    369.87x = 157,557.16
  5. Step 5: Solve for x
    x = 157,557.16/369.87
  6. Step 6: Final answer
    x = 425.98

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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.