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Finding the Fourth Proportional to 553.59, 830.48 and 368.91

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Solution

The fourth proportional to 553.59, 830.48 and 368.91 is: 553.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    553.59 : 830.48 = 368.91 : x
  2. Step 2: Convert to fraction form
    553.59/830.48 = 368.91/x
  3. Step 3: Cross multiply
    553.59x = 830.48 × 368.91
  4. Step 4: Simplify right side
    553.59x = 306,370.53
  5. Step 5: Solve for x
    x = 306,370.53/553.59
  6. Step 6: Final answer
    x = 553.42

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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.