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Finding the Fourth Proportional to 398.52, 595.05 and 357.12

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Solution

The fourth proportional to 398.52, 595.05 and 357.12 is: 533.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    398.52 : 595.05 = 357.12 : x
  2. Step 2: Convert to fraction form
    398.52/595.05 = 357.12/x
  3. Step 3: Cross multiply
    398.52x = 595.05 × 357.12
  4. Step 4: Simplify right side
    398.52x = 212,504.26
  5. Step 5: Solve for x
    x = 212,504.26/398.52
  6. Step 6: Final answer
    x = 533.23

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.