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Finding the Fourth Proportional to 399.18, 595.67 and 358.32

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Solution

The fourth proportional to 399.18, 595.67 and 358.32 is: 534.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    399.18 : 595.67 = 358.32 : x
  2. Step 2: Convert to fraction form
    399.18/595.67 = 358.32/x
  3. Step 3: Cross multiply
    399.18x = 595.67 × 358.32
  4. Step 4: Simplify right side
    399.18x = 213,438.68
  5. Step 5: Solve for x
    x = 213,438.68/399.18
  6. Step 6: Final answer
    x = 534.69

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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.