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Finding the Fourth Proportional to 368.48, 553.36 and 353

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Solution

The fourth proportional to 368.48, 553.36 and 353 is: 530.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    368.48 : 553.36 = 353 : x
  2. Step 2: Convert to fraction form
    368.48/553.36 = 353/x
  3. Step 3: Cross multiply
    368.48x = 553.36 × 353
  4. Step 4: Simplify right side
    368.48x = 195,336.08
  5. Step 5: Solve for x
    x = 195,336.08/368.48
  6. Step 6: Final answer
    x = 530.11

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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.